为防止直接电击,可采用()等安全措施。A、保护接地B、绝缘、屏护C、过载保护D、保护

题型:单项选择题

问题:

为防止直接电击,可采用()等安全措施。

A、保护接地

B、绝缘、屏护

C、过载保护

D、保护接零

考点:电工特种作业操作证电工复审电工复审题库
题型:单项选择题

  I moved into an empty dormitory for the first time two years ago. 小题1: ________Firstly,I realized that I didn’t know anybody at the school. Secondly,I knew that I wanted to  work hard at my lessons and learn something useful. And thirdly,I wanted to have a good time with new classmates,without my parents around.

The first realization frightened me in the beginning. But that fear quickly disappeared. It was the other two goals that ended up being my difficulties. I knew that it was hard to devote enough time to class and to social efforts .小题2:________I knew this would be a challenge,but I didn’t realize how much until classes began.

I got on well with the other girls who lived in my dorm. Often,instead of finishing my homework before it was due,I went downstairs and had ice cream with my neighbor. 小题3:________ I knew it wasn’t very good and the grade I received showed my lack of effort.

I was aware that I needed to find some sort of balance. So I created a schedule that would divide my time up between going to class,doing homework,and relaxing. It seemed like a good idea,but I was only able to follow it for a few days. 小题4: ________

So I tried another plan. Each week I made a list of everything I had to get done during that week.  Then,under the list of things I had to get done,I made a list of things I could do if I had time. 小题5:________I’m glad that I’ve learned to balance things and it has helped prepare me for what is to come after graduation.

A.I was certain of a few things.

B.But I wanted to succeed in both.

C.I always finished it the next day between classes.

D.I didn’t get along well with my teachers.E.This is the method I have used since then.

F.A schedule like that was too much pressure.

G.I made a plan to study hard and communicate with others.

题型:单项选择题

华为搬迁友商网络,站型S2/2/2。如友商理论机顶功率输出为44.5dBm,那么应采用何种基站配置可以保证理论上搬迁后覆盖不下降()

A.40W载频+CDU

B.60W载频+CDU

C.40W载频+EDU

D.PBU+40W载频+ECDU

题型:单项选择题

患儿男,10岁。接种流感疫苗。接种过程中,小儿出现头晕、心悸、面色苍白,出冷汗;查体:体温36.8℃,脉搏130次/分,呼吸25次/分。此时,患儿采取正确的卧位是()。

A.头低脚高位

B.头高脚低位

C.侧卧位

D.俯卧位

E.平卧位

题型:单项选择题

分类资料统计分析中,sP表示()

A.总体率的标准误

B.样本率的标准误

C.总体中数据的变异度

D.总体率

E.样本率

题型:单项选择题

清气与水谷之气结合关系到

A.元气的生成
B.宗气的生成
C.营气的生成
D.卫气的生成
E.中气的生成

更多题库