【单选题】【消耗次数:1】
在50岁后,白内障的患病率是()
A 15%
B 60%
C 30%
D 10%
参考答案:
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相关题目
【单选题】 我国60岁以上人群中的高血压患病率为
①  58.9%
②  20%
③  36.4%
④  46.3%
⑤  13.9%
【单选题】 急性上呼吸道感染是一种严重危害人民健康的常见病,患病率随年龄增长而增加,60岁以上者患病率达( )左右。
①  10%
②  15%
③  30%
④  50%
【单选题】 目前我国65岁以上AD患病率为:
①  3-5%
②  5-10%
③  10-15%
④  15-20%
【简答题】 什么是患病率?影响患病率升高的因素有哪些?
【单选题】 中国20岁以上哮喘患病率是多少
①  0.012
②  0.022
③  0.032
④  0.042
⑤  0.052
【单选题】 四格表中,当a=30,b=60,c=40,d=50时,最小理论频数等于( )
①  70×110/180
②  90×90/180
③  70×90/180
④  90×110/180
【单选题】 如果变量a=50、b=ABC 、c=abc 、d=10,则表达式a d Or b c And b c的值 是 。
①  True
②  False
③  Yes
④  No
【单选题】 Vossius环见于哪种白内障()
①  老年性白内障
②  糖尿病性白内障
③  代谢性白内障
④  钝挫伤性白内障
⑤  中毒性白内障
【单选题】 下列程序执行后的输出结果是 #includevoid main( ) { int a=5,b=60,c; if (ab) {c=a*b;printf(%d*%d=%d\n,b,a,c);} else {c=b/a;printf(%d/%d=%d\n,b,a,c);} }
①  60/5=12
②  300
③  60*5=300
④  12
【单选题】 已知A、B、C三点坐标分别为(10、20、30)(20、40、60)、(30、60、90),则A、B、C三点______。
①  Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:等线; mso-ascii-font-family:等线; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:等线; mso-hansi-theme-font:minor-latin; mso-font-kerning:1.0pt;} 表示一个平面
②  Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:等线; mso-ascii-font-family:等线; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:等线; mso-hansi-theme-font:minor-latin; mso-font-kerning:1.0pt;} 不能表示一个平面
③  Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:等线; mso-ascii-font-family:等线; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:等线; mso-hansi-theme-font:minor-latin; mso-font-kerning:1.0pt;} 表示一个特殊位置平面
④  Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:等线; mso-ascii-font-family:等线; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:等线; mso-hansi-theme-font:minor-latin; mso-font-kerning:1.0pt;} 无法判断
随机题目
【单选题】 设<img src=https://huaweicloudobs.ahjxjy.cn/CB83B33412D9C28C87CF4D6132D3A43D.png title=6$}QW`J4R63_1AAK5TRZK%X.png alt=6$}QW`J4R63_1AAK5TRZK%X.png/>
①  <img src=https://huaweicloudobs.ahjxjy.cn/B6943F38AC4A976E5797F297BED90ED6.png title=_E1FKE[5T(DSC`3HGR`VXET.png alt=_E1FKE[5T(DSC`3HGR`VXET.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/46939636920E1619A5BFF486E82F7B59.png title=[@%0M]%YYQTNH@5(]6}5K_F.png alt=[@%0M]%YYQTNH@5(]6}5K_F.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/2EE01E1EEB19C7920294FC314F750098.png title=(Z@US4FODPJY0)O{FA$N6IK.png alt=(Z@US4FODPJY0)O{FA$N6IK.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/17006DC361E56FFE412315E9D9719283.png title=YAR(GNQX4MTY39X99{{5H@E.png alt=YAR(GNQX4MTY39X99{{5H@E.png/>
【单选题】 若<img src=https://huaweicloudobs.ahjxjy.cn/619DE514CE714746D4860364AD78EAB9.png title=B[{`@`CQ8X4JK_ZIR6BWL]0.png alt=B[{`@`CQ8X4JK_ZIR6BWL]0.png/>处可导,则
①  <img src=https://huaweicloudobs.ahjxjy.cn/EF44DCD96593F03239FC1E8E8F7ACD30.png title=@LTXG[U994C1D0~E7F70~)C.png alt=@LTXG[U994C1D0~E7F70~)C.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/D8AF4E6672C939C11FE20ACDDA8D6820.png title=@N3KI~JT5C$8$RL}([V1RTL.png alt=@N3KI~JT5C$8$RL}([V1RTL.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/6F1A185361375FEB9322BB2E5F0E9CE3.png title=V]{R%%_0KO0PI8M8TXP%SCA.png alt=V]{R%%_0KO0PI8M8TXP%SCA.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/C7214D2C07CA4178AFF1A7DCDC81189B.png title=FGZ~%%X{)8KT`C%@F}U((91.png alt=FGZ~%%X{)8KT`C%@F}U((91.png/>
【单选题】 设<img src=https://huaweicloudobs.ahjxjy.cn/81FFFB02E5DE6AA22E9E01E6A9D98DCE.png title=4Y%IY0`S)A_8EZOK]]6{1VL.png alt=4Y%IY0`S)A_8EZOK]]6{1VL.png/>,则<img src=https://huaweicloudobs.ahjxjy.cn/6058B8A8DCBCBB8DB194497FAFCC30AB.png title=M9ZI9(688XB]TY1U3WK2V$5.png alt=M9ZI9(688XB]TY1U3WK2V$5.png/>
①  <img src=https://huaweicloudobs.ahjxjy.cn/3A6D448D5A99359A53C8620048A32C8F.png title=74L(M{CJ4W]]XZW4~$7~2`7.png alt=74L(M{CJ4W]]XZW4~$7~2`7.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/85F58E6BE2B2446A9D48D587E7D93D28.png title=B%C{~Z`$AXB8)FR9EYK(A(S.png alt=B%C{~Z`$AXB8)FR9EYK(A(S.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/6AA54BFDE7C2B8C6996B474518EF7169.png title=MU6SGH[9K}([@T)3HM1MMH7.png alt=MU6SGH[9K}([@T)3HM1MMH7.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/76DBAB78E4E4B84A90FA7448AD729092.png title=R1I843RN2Y3CT93GE}(V83T.png alt=R1I843RN2Y3CT93GE}(V83T.png/>
【单选题】 设<img src=https://huaweicloudobs.ahjxjy.cn/4DAF0C67B2C5F33D08EFE0FF36995E72.png title=B@S`E]~HNQ97SSN@]7(X7$H.png alt=B@S`E]~HNQ97SSN@]7(X7$H.png/>,则<img src=https://huaweicloudobs.ahjxjy.cn/218D27D1EB75F9DF442B608B6FB10CFC.png title=BNCZO08BDJQBUD]~7FO8UQ4.png alt=BNCZO08BDJQBUD]~7FO8UQ4.png/>( )
①  <img src=https://huaweicloudobs.ahjxjy.cn/1D2ACF70978784FDF71B47DC59A8C853.png title=6{2)]@9({RK9A@1EXV8ZY`7.png alt=6{2)]@9({RK9A@1EXV8ZY`7.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/3E7D4049D2B6789F745411376CBB1DF8.png title=HU0QS745M`Q6T2_PY7]WO(D.png alt=HU0QS745M`Q6T2_PY7]WO(D.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/28A41F15E9DC696DF72D636DFF70F177.png title=L1B7)_3LD7[O7Z{FDT`M_NV.png alt=L1B7)_3LD7[O7Z{FDT`M_NV.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/86F3C423D11230C1C90819FAF7924133.png title=UD`LRWR16QO{EPEF[]6~01L.png alt=UD`LRWR16QO{EPEF[]6~01L.png/>
【单选题】 函数<img src=https://huaweicloudobs.ahjxjy.cn/91632AD3AE0ACCB11AEF709404C81AE7.png title=UIX_4I]B21{R1A]~27@1N@R.png alt=UIX_4I]B21{R1A]~27@1N@R.png/>处( )
①  可导、连续
②  不连续但可导
③  连续但不可导
④  不连续、不可导
【单选题】 在下列函数中,( )在指定区域内是单调减少的函数
①  <img src=https://huaweicloudobs.ahjxjy.cn/087E58F5FC3F975668C0B235653FCD10.png title={KZ%~M7WDSN86IJUUVMFVK7.png alt={KZ%~M7WDSN86IJUUVMFVK7.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/44E8F1CC8CEFD9400C2FFE917B1F2D7D.png title=AX_S_DL_ZW}QZK]}]L`SP{7.png alt=AX_S_DL_ZW}QZK]}]L`SP{7.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/743F6FDBC8ECBD9A330B63164AFD4FF7.png title=F_M`]4_A]{N{~J$WD8C(Z9O.png alt=F_M`]4_A]{N{~J$WD8C(Z9O.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/7A6F6928A94857244FFE19169BD6C0F3.png title=VECWQKKE81JSICN(}}47RK5.png alt=VECWQKKE81JSICN(}}47RK5.png/>
【单选题】 设函数<img src=https://huaweicloudobs.ahjxjy.cn/73CA8AD9DB48E63C4A5827998A73084D.png title=(_Q71M6GS`)WUA[6}LYLRV0.png alt=(_Q71M6GS`)WUA[6}LYLRV0.png/>处可导,则它在<img src=https://huaweicloudobs.ahjxjy.cn/969AD1929844953C8EE3A11177AF30B7.png title=0S184[DY{]HA}1F0@(9)Z`J.png alt=0S184[DY{]HA}1F0@(9)Z`J.png/>的微分<img src=https://huaweicloudobs.ahjxjy.cn/F741D7BC128922C170DDFEEB63F7B475.png title=HC@97B9C6AGZ]ING9W}PO7Q.png alt=HC@97B9C6AGZ]ING9W}PO7Q.png/>指的是( )
①  <img src=https://huaweicloudobs.ahjxjy.cn/21BD989AA5AE0D7D370226BBF4F86CC9.png title=@O9FPRTJWGZ]QM3ZY%TBFA3.png alt=@O9FPRTJWGZ]QM3ZY%TBFA3.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/65FA7E556C01676B0413FAA4C25B8596.png title=`KBX56ZYLY~Z$D3A4ZRT%62.png alt=`KBX56ZYLY~Z$D3A4ZRT%62.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/B53E25AC39B7F9C810FE410F50F50A67.png title=E]B(XMT8MJIJY2`98Y_K[7J.png alt=E]B(XMT8MJIJY2`98Y_K[7J.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/F741D7BC128922C170DDFEEB63F7B475.png title=HC@97B9C6AGZ]ING9W}PO7Q.png alt=HC@97B9C6AGZ]ING9W}PO7Q.png/>
【单选题】 曲线<img src=https://huaweicloudobs.ahjxjy.cn/9BAA0EEF96486ABE6B96C42260AC3295.png title=V8D1_252BT[]]OJ{@[5W{W0.png alt=V8D1_252BT[]]OJ{@[5W{W0.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/83CC18378D52FDAF840564D2C20968B8.png title=@GAPYL78)2%S6DLWW_T]WUT.png alt=@GAPYL78)2%S6DLWW_T]WUT.png/>处的切线方程是
①  <img src=https://huaweicloudobs.ahjxjy.cn/239440F7CADD14EAF5DE40860D6A6CED.png title=8N5V~PCOA5}QCC2)OP@8087.png alt=8N5V~PCOA5}QCC2)OP@8087.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/1C4570A0B26493D0303AF90763F6F9A2.png title=14@NUX89XKZ7ZG6HRO3@JM6.png alt=14@NUX89XKZ7ZG6HRO3@JM6.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/50D81DD2ED7D5A908165FA5F3459E533.png title=LYC@54MTKVFS1]M]MUATH$P.png alt=LYC@54MTKVFS1]M]MUATH$P.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/9C53A1578E8695741C53833A78780F67.png title=W@WG@8I$0NIOX15V]Q7IVT1.png alt=W@WG@8I$0NIOX15V]Q7IVT1.png/>
【单选题】 设<img src=https://huaweicloudobs.ahjxjy.cn/4DE06EAA9B2A6C6428D820898FA907B6.png title=1367}A`RW8VPZL)XR3JW1RA.png alt=1367}A`RW8VPZL)XR3JW1RA.png/>
①  0
②  1
③  -1
④  <img src=https://huaweicloudobs.ahjxjy.cn/92B22E22D16519CCFCF7A4BD695F7FDA.png title=4$GR`FI~(J7ZM{$~5YYL2[4.png alt=4$GR`FI~(J7ZM{$~5YYL2[4.png/>
【单选题】 已知<img src=https://huaweicloudobs.ahjxjy.cn/1E88C66167540D6C3092C9E1747A668F.png title=]Q@U(E$B]P`_DRWH~AATJ9Y.png alt=]Q@U(E$B]P`_DRWH~AATJ9Y.png/>,则<img src=https://huaweicloudobs.ahjxjy.cn/258DCF11C6A9760A6AE6BB942D5FE4FC.png title=E04ZCHTQIF9%~]@]O@0YO{0.png alt=E04ZCHTQIF9%~]@]O@0YO{0.png/>
①  <img src=https://huaweicloudobs.ahjxjy.cn/613F3BFB090B246E86F0E4E580E28124.png title=DLCTT_7_)FSC0V]Y9@T0{1D.png alt=DLCTT_7_)FSC0V]Y9@T0{1D.png/>
②  <img src=https://huaweicloudobs.ahjxjy.cn/A776E71B8AC2FF8C98780E9E7B023534.png title=QSNNLTJT8_UTOL5@ETX5SSD.png alt=QSNNLTJT8_UTOL5@ETX5SSD.png/>
③  <img src=https://huaweicloudobs.ahjxjy.cn/F10538329C5BC7CCE4FFCB1871A72F45.png title=1BBNF$NT()OL5FG5OQJ1J%K.png alt=1BBNF$NT()OL5FG5OQJ1J%K.png/>
④  <img src=https://huaweicloudobs.ahjxjy.cn/8425F6E26B2F0B9C312F6EEFE62DBF5D.png title=}{S95S~F$CE0I$`A`3RBO_Q.png alt=}{S95S~F$CE0I$`A`3RBO_Q.png/>