静电有三大特点：一是（）高；二是（）突出；三是尖端放电现象严重。
参考答案：电压；静电感应
—Is Bob still teaching?
—I’m afraid not. He is said the school as he has become a businessman.
A．that he has left
B．to leave
C．to have left
D．to be left
农村信用社办理各项业务和记账的根据是（）
A、基本凭证
B、特定凭证
C、会计凭证
D、会计科目
