六氟化硫负荷开关的优点有（）。A.电寿命长，开断力强 B.适于频_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题多项选择题

六氟化硫负荷开关的优点有（）。

A.电寿命长，开断力强

B.适于频繁操作

C.适用于小电流（电感、电容）开断

D.抗严酷环境条件能力强，适于城乡中推广

答案

参考答案：A, B, C, D

补全对话，情景问答

选择句子填入横线上，补全对话。

A. Really? What colour is it? B. Oh, your bag is heavy.
C. How nice! I like it. D. May I have a look?

Chen Jie: Hi, Amy! I have a new schoolbag.
Amy: 1.
Chen Jie: It's red and yellow. Look!
Amy: 2.                   What's in it?
Chen Jie: I have many books in it.
Amy: 3.
Chen Jie: Sure, here you are.
Amy: Wow, it's a mouse. 4.
Chen Jie: Thank you.

填空题

以下程序的功能是：通过函数func输入字符并统计输入字符的个数。输入时用字符@作为输入结束标志。请填空。#include long 【】；/* 函数说明语句 */main(){long n； n=func()；printf("n=%1d\n"，n)；}long func(){ long m；for(m=0；getchar()!=@;【】)；return m；}