【单选题】
执行指令MOVX A,@DPTR时,<img width=21 height=13 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml207924\wps1.jpg style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>、<img width=19 height=12 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:\Users\ADMINI~1\AppData\Local\Temp\ksohtml207924\wps2.jpg style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>脚的电平为( )
【单选题】
设<img class="kfformula" src="20200624/1592994110275229.png" data-latex="{N}_{A}" width="43" height="27"/>为阿伏加德罗常数的值,现有0.3mol/L<img class="kfformula" src="20200624/1592994110834086.png" data-latex="{K}_{2}{SO}_{4}" width="63" height="30"/>溶液,1L溶液中<img class="kfformula" src="20200707/1594086644585029.png" data-latex="{S{O}_{4}}^{2-}" width="68" height="32"/>有( )<img class="kfformula" src="20200624/1592994110685297.png" data-latex="{N}_{A}" width="49" height="27"/>个。
【单选题】
如果某消费者的<img width=87 height=37 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif alt=http://mooc1-api.chaoxing.com/ananas/latex/p/2639229 word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>,他会( )。
【单选题】
图示桁架有几根零杆( )。<img src=https://huaweicloudobs.ahjxjy.cn/10A53700C54D4D563C953D9670ACFEFE.gif title=1.gif alt=1.gif/>
【单选题】
体内缺乏维生素<img class="kfformula" src="20200424/1587707769848267.png" data-latex="{B}_{1}" width="36" height="22"/>会导致( )。
【判断题】
如果矩阵<img width=16 height=18 src=https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/temp/msohtmlclip1/01/clip_image002.gif style=background:url(https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>是非退化的,那么它一定是可逆矩阵.
【判断题】
两个零多项式的最大公因式是<img width=16 height=19 src=https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/temp/msohtmlclip1/01/clip_image002.gif style=background:url(https://main.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>
【单选题】
计算1<img class="kfformula" src="20200624/1592991783289559.png" data-latex="{mo1SO}^{2-}_{4}" width="90" height="34"/>中含有的O的物质的量是( )mol。
【单选题】
“ <img width="19" height="17" style="background: url(/project/js/ueditor/themes/default/images/word.gif) no-repeat center; border: 1px solid rgb(221, 221, 221);" src="/project/js/ueditor/themes/default/images/spacer.gif" word_img="file:///C:/Users/t410i/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg"/>”是哪种装饰音的符号 ( )
【单选题】
在数列<img class="kfformula" src="20190809/1565316783973080.png" data-latex="\left \{ {{a}_{n}} \right \} "/>中,前<img class="kfformula" src="20190809/1565316783992384.png" data-latex="n"/>项和公式是<img class="kfformula" src="20190809/1565316783683277.png" data-latex="{s}_{n}=4{n}^{2}-n"/>,那么<img class="kfformula" src="20190809/1565316783325652.png" data-latex="{a}_{2}"/>为( )