题目内容

在直流电路中，电感可以看作开路，电容可以看作短路。

A. 对
B. 错

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单一参数电感元件的正弦交流电路中，消耗的有功功率等于零。

A. 对
B. 错

Education is _______for all children in Britain between the ages of 5 and 16.

A. alternative
B. compulsory
C. necessary
D. competitive

I lost touch with most of my old school friends. With the help of internet, I have finally _________most of them.

A. tracked down
B. tracked out
C. modeled after
D. looked for

Many other countries ___ their schools _ British schools, and with good reason.

A. go after
B. look after
C. model after
D. run after