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【判断题】
在RLC串联电路中，因各电压是同频率的正弦交流电，所以总电压的相量等于各总部分电压相量之和。A.
正确
B.
错误
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【简答题】判断下列句子属于何种句型。 He speaks English well.
【简答题】判断下列句子属于何种句型。 It cost me three dollars.
【简答题】判断下列句子属于何种句型。 Teacher will make your English better.
【单选题】Look, the little girl is dancing as if she ______ a little bird.
A.
is
B.
were
C.
has been
D.
had been
【单选题】欲配制pH=5.00缓冲溶液500ml,已加入6mol•L -1 HAc的34.0ml,则约需加NaAc•3H 2 O_______g。(HAc pKa=4.74):
A.
20
B.
50
C.
30
D.
40
【单选题】He had __________ little education that he couldn’t teach __________ little children.
A.
such; so
B.
so; such
C.
such; such
D.
so; so
【简答题】判断下列句子属于何种句型。 I sent you an E-mail.
【简答题】判断下列句子属于何种句型。 You can leave the door open.
【单选题】Until then did I realize that their marriage had ______ because they had little in common.
A.
put off
B.
given up
C.
broken down
D.
called off
【简答题】The little boy had no choice but (tell) ______ the truth.
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