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【单选题】
某三相四线制供电电路中相电压为 220V,则火线与火线之间的电压为()。A.
220V
B.
311V
C.
380V
D.
OV
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【单选题】This is ________ car. It looks very beautiful.
A.
Kitty’s and Sam
B.
Kitty and Sam’s
C.
Kitty’s and Sam’s
D.
Kitty and Sam
【单选题】---Hello, may I speak to Kitty? ---
A.
This is Kitty..
B.
I’m Kitty.
C.
Yes, speaking.
D.
A&C
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A.
may not
B.
can’t
C.
mustn’t
D.
needn’t
【简答题】C.C.
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