检修高压电动机时，下列行为描述错误的是（）。A、先实施停电安全措施，再在高压电动机及

根据句意及首字母提示填空。

1. —What did you do last night? —I went to the c_____ with my friends. Hero was on.

2. If you want to go to other countries, you need to have a p_____.

3. Please speak quietly, the baby is a_____.

4. We came to r_____ that happiness is the most important thing in our life and work as we grow up.

5. He faced his illness with great c_____.

点火线圈上的附加电阻（即热敏电阻）的主要作用是增加初级电流。

下列哪一个条件最适合于病毒的长期保存？（）

A.-20℃冰箱

B.-4℃冰箱

C.冷冻干燥

D.-70℃冰箱

E.50％甘油盐水

根据拼音写汉字和给汉字注音。
zīzhū( )必较 憧憬( ) lín xún( )
踌躇( ) chóu( )怅 huì( )萃