沿绝缘子串进入电场，等电位人员的电位是（）的，为了防止沿绝缘子串放电，等电位人员进入或退出时应跨（）短（）片绝缘子，不得多跨多短。
参考答案：变化；2；3
在腐乳制作的过程中，加盐腌制的目的不是为了[ ]
A．调味
B．调pH
C．析出豆腐中的水分
D．抑制微生物的生长
从Ⅱ栏中找出I栏相对应的答语。
I
( )1. Can I ask you some questions?
( )2. Would you mind my opening the window?
( )3, How far is it from school?
( )4. How long can I keep the dictionary?
( )5. How does your mother go to work?
( )6. What were you doing when the UFO arrived?
Ⅱ
A.I was watching a football match in the room.
B．No, not at all.
C．Of course./ Sure.
D．Five minutes by car.
E．Two weeks.
F．By bus.
