【单选题】【消耗次数：1】
<imgdata-url="doc/a@F2A7E4B2617A013170ED03C846074448.bmp"data-preview_url_ueditor="doc/a@F2A7E4B2617A013170ED03C846074448.bmp"src="http://121.251.253.213/doc/a@F2A7E4B2617A013170ED03C846074448.bmp/download?time=636150841837416076&token=7C55E005B87CD01E5005CD6386D93F51&filename=bmp"/>
①
-2V
②
2V
③
6V
④
8V
参考答案：
复制
纠错
相关题目
【单选题】
<imgdata-url="doc/a@CF364D682E7EDC3D6F4E30F2BB4F580C.png"data-preview_url_ueditor="doc/a@CF364D682E7EDC3D6F4E30F2BB4F580C.png"src="http://121.251.253.213/doc/a@CF364D682E7EDC3D6F4E30F2BB4F580C.png/download?time=635997629330923755&token=1279F1B02A815952B66C14C416407130&filename=png"/>
①
<imgdata-url="doc/a@FD3BE4B9A603A28900BA1CE5A4917F8F.png"data-preview_url_ueditor="doc/a@FD3BE4B9A603A28900BA1CE5A4917F8F.png"src="http://121.251.253.213/doc/a@FD3BE4B9A603A28900BA1CE5A4917F8F.png/download?time=635997629504240060&token=541E9A5C2B0C3ED87051C8D3BDF24F82&filename=png"/>
②
<imgdata-url="doc/a@7A41590BEFCFCBE74C6F7E89E7967805.png"data-preview_url_ueditor="doc/a@7A41590BEFCFCBE74C6F7E89E7967805.png"src="http://121.251.253.213/doc/a@7A41590BEFCFCBE74C6F7E89E7967805.png/download?time=635997629627012275&token=B43E29170C3B3757C96EB1A856117760&filename=png"/>
③
<imgdata-url="doc/a@99F8D6DB9EB3FB1C901B53915B0A099D.png"data-preview_url_ueditor="doc/a@99F8D6DB9EB3FB1C901B53915B0A099D.png"src="http://121.251.253.213/doc/a@99F8D6DB9EB3FB1C901B53915B0A099D.png/download?time=635997629743700480&token=080FC0D2FF79A92E265FCC56F38259B3&filename=png"/>
④
<imgdata-url="doc/a@827C3797B683CCCEE410F2ACE266DAAE.png"data-preview_url_ueditor="doc/a@827C3797B683CCCEE410F2ACE266DAAE.png"src="http://121.251.253.213/doc/a@827C3797B683CCCEE410F2ACE266DAAE.png/download?time=635997629843852656&token=89F3878D2896DF9EE9FFD429BD4960F7&filename=png"/>
【单选题】
<imgdata-url="doc/a@DD97FD1C59062471FCDBF624FEB9B31B.bmp"data-preview_url_ueditor="doc/a@DD97FD1C59062471FCDBF624FEB9B31B.bmp"src="http://121.251.253.213/doc/a@DD97FD1C59062471FCDBF624FEB9B31B.bmp/download?time=636150844170556174&token=D4D7C2CD4AAB380DE1C81AEBDF787C7C&filename=bmp"/>
①
0.1A
②
0.05A
③
0A
④
0.2A
【单选题】
<imgsrc="http://121.251.253.213/doc/a@3EEB543EE4C26953B2F4A84849EF970E.png/download?time=636002407370339938&token=2B860297B4D3A37E02DD8FD066E353D5&filename=png"data-preview_url_ueditor="doc/a@3EEB543EE4C26953B2F4A84849EF970E.png"data-url="doc/a@3EEB543EE4C26953B2F4A84849EF970E.png"/>
①
<imgsrc="http://121.251.253.213/doc/a@39718BFE07D413FF9B5576D082DF02A2.png/download?time=636002407468308110&token=B91DA8C5350A10D491A51533ABD0C98B&filename=png"data-preview_url_ueditor="doc/a@39718BFE07D413FF9B5576D082DF02A2.png"data-url="doc/a@39718BFE07D413FF9B5576D082DF02A2.png"/>
②
<imgsrc="http://121.251.253.213/doc/a@243286ACC8E46086F734CA856A259C5F.png/download?time=636002407561752274&token=1F3B294A3C4990CC176E288A73F7F41C&filename=png"data-preview_url_ueditor="doc/a@243286ACC8E46086F734CA856A259C5F.png"data-url="doc/a@243286ACC8E46086F734CA856A259C5F.png"/>
③
<imgsrc="http://121.251.253.213/doc/a@C40D30CADEB6FB497B64EA46BBC6D361.png/download?time=636002407648644427&token=8F86320F39DFDE390D3A1F566BB8A1B2&filename=png"data-preview_url_ueditor="doc/a@C40D30CADEB6FB497B64EA46BBC6D361.png"data-url="doc/a@C40D30CADEB6FB497B64EA46BBC6D361.png"/>
④
<imgsrc="http://121.251.253.213/doc/a@2171497A1A069BCA694AC32D89A3EE15.png/download?time=636002407739280586&token=D4B87765F15D9453D1F9B5AAD647E41E&filename=png"data-preview_url_ueditor="doc/a@2171497A1A069BCA694AC32D89A3EE15.png"data-url="doc/a@2171497A1A069BCA694AC32D89A3EE15.png"/>
【单选题】
<imgdata-url="doc/a@F166ECE7E5C80E56201F2CF12A8211C6.jpg"data-preview_url_ueditor="doc/a@F166ECE7E5C80E56201F2CF12A8211C6.jpg"src="http://121.251.253.213/doc/a@F166ECE7E5C80E56201F2CF12A8211C6.jpg/download?time=636159463063828868&token=6B779CB0CF24492E5AC0BDCFF43DB14C&filename=jpg"/>
①
24
②
12
③
6
④
1
【单选题】
<imgsrc="http://121.251.253.213/doc/a@273879DE6423BE2E709315A0E4668C6B.png/download?time=636002413692251042&token=E3474BBE9C4022CD5EBACBF9CC7276F5&filename=png"data-preview_url_ueditor="doc/a@273879DE6423BE2E709315A0E4668C6B.png"data-url="doc/a@273879DE6423BE2E709315A0E4668C6B.png"/>
①
<imgsrc="http://121.251.253.213/doc/a@BBA8A5FF2BB7FFB000854ED17F7A66EE.png/download?time=636002413763231167&token=0AA905018DBBD2ECDB1D40FBAF64116A&filename=png"data-preview_url_ueditor="doc/a@BBA8A5FF2BB7FFB000854ED17F7A66EE.png"data-url="doc/a@BBA8A5FF2BB7FFB000854ED17F7A66EE.png"/>
②
<imgsrc="http://121.251.253.213/doc/a@32F816E1A35E0B2C69741D7EB262F482.png/download?time=636002413856675331&token=5BD0D363F1D679D4CC16C72971CEC7A5&filename=png"data-preview_url_ueditor="doc/a@32F816E1A35E0B2C69741D7EB262F482.png"data-url="doc/a@32F816E1A35E0B2C69741D7EB262F482.png"/>
③
<imgsrc="http://121.251.253.213/doc/a@64E1C45016A875270ADD44DD646BD9B8.png/download?time=636002413948871493&token=791C202D63C95CA99AB83A1F6F1E7DE9&filename=png"data-preview_url_ueditor="doc/a@64E1C45016A875270ADD44DD646BD9B8.png"data-url="doc/a@64E1C45016A875270ADD44DD646BD9B8.png"/>
④
<imgsrc="http://121.251.253.213/doc/a@4B8DD3C9F261F0664AE8BDE1F8CCAD89.png/download?time=636002414039039651&token=7ACAA576D52E5AE848DF68ACE7B6E1A7&filename=png"data-preview_url_ueditor="doc/a@4B8DD3C9F261F0664AE8BDE1F8CCAD89.png"data-url="doc/a@4B8DD3C9F261F0664AE8BDE1F8CCAD89.png"/>
【单选题】
<imgsrc="http://121.251.253.213/doc/a@F40089C6EE85E2D136211F10253A5698.png/download?time=636002405281028268&token=97BDD00CEAA6E56F32B8E987DD49B9AA&filename=png"data-preview_url_ueditor="doc/a@F40089C6EE85E2D136211F10253A5698.png"data-url="doc/a@F40089C6EE85E2D136211F10253A5698.png"/>
①
<imgsrc="http://121.251.253.213/doc/a@E99A777F88517CA13AAE35DD30DBB71F.png/download?time=636002405398808475&token=4D7248307C9F6F80208444D59D17659B&filename=png"data-preview_url_ueditor="doc/a@E99A777F88517CA13AAE35DD30DBB71F.png"data-url="doc/a@E99A777F88517CA13AAE35DD30DBB71F.png"/>
②
<imgsrc="http://121.251.253.213/doc/a@09D42ABBE14E83AE4D55C2BDE4A9773B.png/download?time=636002405516900683&token=EDAE071674E78C3719A53AA00F69D4F1&filename=png"data-preview_url_ueditor="doc/a@09D42ABBE14E83AE4D55C2BDE4A9773B.png"data-url="doc/a@09D42ABBE14E83AE4D55C2BDE4A9773B.png"/>
③
<imgsrc="http://121.251.253.213/doc/a@1F36AE2BFAF559AF77D269C3C351F2A5.png/download?time=636002405634056888&token=78165392C86D653738CFFD74D7B01289&filename=png"data-preview_url_ueditor="doc/a@1F36AE2BFAF559AF77D269C3C351F2A5.png"data-url="doc/a@1F36AE2BFAF559AF77D269C3C351F2A5.png"/>
④
<imgsrc="http://121.251.253.213/doc/a@344592340C9884191FD3C1CA39FDAF73.png/download?time=636002405754957101&token=1CE4D33A49B8C5924089001A4BEECB53&filename=png"data-preview_url_ueditor="doc/a@344592340C9884191FD3C1CA39FDAF73.png"data-url="doc/a@344592340C9884191FD3C1CA39FDAF73.png"/>
【单选题】
<imgsrc="http://121.251.253.213/doc/a@F4481B790DEA53F8BA784340D9E7DBD5.png/download?time=636002471591908737&token=C9861E965BE2A3F88E19FDB83A015858&filename=png"data-url="doc/a@F4481B790DEA53F8BA784340D9E7DBD5.png"data-preview_url_ueditor="doc/a@F4481B790DEA53F8BA784340D9E7DBD5.png"/>
①
<imgsrc="http://121.251.253.213/doc/a@49AD58B83D74079A52B9BC9D580A57F0.png/download?time=636002471674588883&token=5D0CC3E9D5071B5B99D33E11198168CF&filename=png"data-url="doc/a@49AD58B83D74079A52B9BC9D580A57F0.png"data-preview_url_ueditor="doc/a@49AD58B83D74079A52B9BC9D580A57F0.png"/>
②
<imgsrc="http://121.251.253.213/doc/a@7EFC8C78A5255FC23D2408BA7460C4B1.png/download?time=636002471771153052&token=C4DD6005C7D6AB83CC98365C90E96F7F&filename=png"data-url="doc/a@7EFC8C78A5255FC23D2408BA7460C4B1.png"data-preview_url_ueditor="doc/a@7EFC8C78A5255FC23D2408BA7460C4B1.png"/>
③
<imgsrc="http://121.251.253.213/doc/a@08C1F1E9561C37C7D96249E0FF936B6A.png/download?time=636002471855705201&token=48F4A7689592EAC7AC51D4A9DC7C61E9&filename=png"data-url="doc/a@08C1F1E9561C37C7D96249E0FF936B6A.png"data-preview_url_ueditor="doc/a@08C1F1E9561C37C7D96249E0FF936B6A.png"/>
④
<imgsrc="http://121.251.253.213/doc/a@33BDC224DA6CE3012ADE43A9FC77D6D6.png/download?time=636002471973797408&token=349E4644A1E20C4BDE3E18EC7BF17375&filename=png"data-url="doc/a@33BDC224DA6CE3012ADE43A9FC77D6D6.png"data-preview_url_ueditor="doc/a@33BDC224DA6CE3012ADE43A9FC77D6D6.png"/>
【单选题】
<imgdata-url="doc/a@64C1EC3EEA4DF633E8F805F3E58A8237.png"data-preview_url_ueditor="doc/a@64C1EC3EEA4DF633E8F805F3E58A8237.png"src="http://121.251.253.213/doc/a@64C1EC3EEA4DF633E8F805F3E58A8237.png/download?time=635997624680243587&token=CF4E2E55F28CEA774D83D73AB9CCD032&filename=png"/>
①
<imgdata-url="doc/a@CD9E3C0AEDBA75C158DE390C2B6821D9.png"data-preview_url_ueditor="doc/a@CD9E3C0AEDBA75C158DE390C2B6821D9.png"src="http://121.251.253.213/doc/a@CD9E3C0AEDBA75C158DE390C2B6821D9.png/download?time=635997625449012937&token=2B0506A7D55F104F3EB18AB1B438E15E&filename=png"/>
②
<imgdata-url="doc/a@A1D843C6B606CAFFF22FD80B5FD689F3.png"data-preview_url_ueditor="doc/a@A1D843C6B606CAFFF22FD80B5FD689F3.png"src="http://121.251.253.213/doc/a@A1D843C6B606CAFFF22FD80B5FD689F3.png/download?time=635997625578805165&token=FDE9A0AD61E747CAFD5D2725C22228BA&filename=png"/>
③
<imgdata-url="doc/a@F74F9887F67CF35CD12FD326A8DF07D7.png"data-preview_url_ueditor="doc/a@F74F9887F67CF35CD12FD326A8DF07D7.png"src="http://121.251.253.213/doc/a@F74F9887F67CF35CD12FD326A8DF07D7.png/download?time=635997625722481418&token=114591636EA36A1A2C9190B8F9009CBF&filename=png"/>
④
<imgdata-url="doc/a@1DD22FD883B6768EC3835E79FCEDA936.png"data-preview_url_ueditor="doc/a@1DD22FD883B6768EC3835E79FCEDA936.png"src="http://121.251.253.213/doc/a@1DD22FD883B6768EC3835E79FCEDA936.png/download?time=635997625829341605&token=00879720FD2F6C88D666C6E45BAAAFAF&filename=png"/>
【单选题】
<imgsrc="http://121.251.253.213/doc/a@F7DFB53E01818944D852AA5ECC191CEC.png/download?time=636002423040255461&token=7E12063C1087B7CE79120A46C22C77A4&filename=png"data-preview_url_ueditor="doc/a@F7DFB53E01818944D852AA5ECC191CEC.png"data-url="doc/a@F7DFB53E01818944D852AA5ECC191CEC.png"/>
①
<imgsrc="http://121.251.253.213/doc/a@D21DE64C3DBA04E3EFF86EBC2F60CDEB.png/download?time=636002423445856173&token=C0943D40F3B2501A8F02FBEA0E2E2505&filename=png"data-preview_url_ueditor="doc/a@D21DE64C3DBA04E3EFF86EBC2F60CDEB.png"data-url="doc/a@D21DE64C3DBA04E3EFF86EBC2F60CDEB.png"/>
②
<imgsrc="http://121.251.253.213/doc/a@316FF33F9C0F2533BF47288DA9C8E085.png/download?time=636002423526664315&token=3BB1460E7F5D236EFB1518F30B5639C1&filename=png"data-preview_url_ueditor="doc/a@316FF33F9C0F2533BF47288DA9C8E085.png"data-url="doc/a@316FF33F9C0F2533BF47288DA9C8E085.png"/>
③
<imgsrc="http://121.251.253.213/doc/a@F6EC792366661495173DD40D102C98AD.png/download?time=636002423620108479&token=7F23A095B13B128BF438EF6731068BB5&filename=png"data-preview_url_ueditor="doc/a@F6EC792366661495173DD40D102C98AD.png"data-url="doc/a@F6EC792366661495173DD40D102C98AD.png"/>
④
<imgsrc="http://121.251.253.213/doc/a@61FCBA64D1107B85E22AF30B438DD9FD.png/download?time=636002423709652637&token=571DD66154D3E0DE24F32E569341FDCB&filename=png"data-preview_url_ueditor="doc/a@61FCBA64D1107B85E22AF30B438DD9FD.png"data-url="doc/a@61FCBA64D1107B85E22AF30B438DD9FD.png"/>
【单选题】
<imgsrc="http://121.251.253.213/doc/a@7B954E5F91FE7A2078D479B19DA8F244.png/download?time=636002401335313338&token=260538373F1F6FD4C1339FE2727B1A5C&filename=png"data-preview_url_ueditor="doc/a@7B954E5F91FE7A2078D479B19DA8F244.png"data-url="doc/a@7B954E5F91FE7A2078D479B19DA8F244.png"/>
①
3/4
②
1/3
③
1/4
④
1/2
随机题目
【单选题】
设有说明：char w；int x；float y；double z；则表达式w*x+z-y 值的数据类型为（）.
①
float
②
char
③
int
④
double
【单选题】
合法的数组定义是（）
①
inta[]={string}；
②
inta[5]={0，1，2，3，4，5}；
③
chara={string}；
④
chara[]={0，1，2，3，4，5}
【单选题】
标识符是用来标识变量名等的有效字符序列，以下列出的有效标识符[按命名要求命名]有（）。
①
float
②
3type
③
class name
④
_productid
【单选题】
若有以下说明，int？a[12]={1，2，3，4，5，6，7，8，9，10，11，12}；？则数值为4的表达式是（）
①
a[4]
②
a（3）
③
a[3+1]
④
a[4]-a[0]
【单选题】
下面程序的输出结果是（） main（ ） {int x=40,y=4,z=4; x=y==z; printf(%d,x); x=x==(y-z); printf(%d,x); }
①
40
②
41
③
11
④
10