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【单选题】
在静电场中,以下说法正确的是:A.
电场强度为零的地方，电势也一定为零；
B.
电势为零的地方，场强也一定为零
C.
电势的零参考位置不能任意选取，只能选择在无穷远处；
D.
带正电的物体，电势可能是负的
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【简答题】通用语言规范,简称CLS。在.NET中,如果用C#语言写了一个遵守__________规则的类,其他编程语言如果也遵守该规则,那么用其他编程语言就可以调用C#语言编写的类。
【单选题】Success will belong to those ___ never say impossible ..
A.
whom
B.
who
C.
that
D.
which
【单选题】Listen carefully and choose the consonant you hear.
A.
/j/
B.
/d ʒ /
C.
/ ʒ /
D.
/t ʃ /
【单选题】Success will belong to those ___ never say “impossible”.
A.
whom
B.
what
C.
who
D.
which
【单选题】The first thing ________ I did was to see if there were any products ________ might help me, but there only seemed to be powders ________ to kill snakes.
A.
that; /; designed
B.
which; that; designed
C.
/; that; designed
D.
/; which; design
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