问题 单项选择题

TN系统是电源系统(),负载设备的外露导电部分通过保护导体连接到此接地点的系统

A.不接地

B.有一点直接接地

C.径高阻抗接地

答案

参考答案:B

完形填空

第二节(共5小题,每题2分,满分10分。)

根据短文的内容,从短文后的选项中选出能填入空白处的最佳选项。并在答题卡上相应的位置将该项涂黑,选项中有两项为多余项。

I come from a close, loving family. I have three elder brothers.

My parents owned a wood supply business.  71 When I was a kid, people used to laugh at my dad and say his volunteer work was his business and his business was his hobby .That rubbed off on me. For example, I was a Big Brother in high school, and I continued doing volunteer work in college.

In 1979, just before graduation, my brother Mark asked if I’d like to help him start a software company.  72 And I was happy that later it became very unusual in the software industry. Once I started working, I continued to volunteer.

  73 So I volunteer to company the elderly persons who live alone. I met Malcolm, who’s physically healthy.  74 He is also interested in my work. He often says “You can get caught up being the CEO of a half-billion-dollar software company very quickly.”

I learn kindness, humility(谦恭), a positive outlook on life from Malcolm.  75 But we have been together for five years and there is no end in sight.

A.So I joined his company.

B.They are successful in the business.

C.Most people volunteer for a year.

D.But they were active volunteers in our community.E. He learn how to do volunteer work from me .

F. I’m a big believer that you learn from those around you by volunteering.

G. We talk about what friends talk about.

多项选择题