Try to guess its meaning when you meet a new word. Don't ______ your dictionary all the time. [ ]

A. work on

B. try on

C. keep on

D. depend on

兆欧表有三个测量端钮，分别标有L，E和G三个字母，若测量电缆的对地绝缘电阻，其屏蔽层应接（）。

A、L端钮

B、E端钮

C、G端钮

D、C端钮