风力发电机组的不均衡载荷主要是由下列哪些因素引起() A.风剪切 B.塔影效应 C.

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问题:

风力发电机组的不均衡载荷主要是由下列哪些因素引起()

A.风剪切

B.塔影效应

C.对风偏差

D.偏航作用

考点:电力技术监督上岗员监控自动化技术监督监控自动化技术监督题库
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No.7信令系统的()级由硬件和软件实现。

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请看下列的人名并进行回答。

           Jim Green          Yao Ming

1. 两人的姓分别是:_______ 和 _______

2. 两人的名分别是:_______ 和 _______

3. 对两人的正式称呼分别是:Mr_______ 和 Mr_______

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Jenny lived in a town.Her father,Mr.Young,had a shop there and sold clothes in it.The shopkeeper was born in a poor family and was in school no more than a year.He was always sorry for it though he had much money now.He hoped his daughter could become a scientist.But the girl didn’t 1ike anything else except singing.She often went to the concerts,bought a lot of records the famous pop stars made and insisted on listening to the music when she was free.Of course she wanted to be a pop star,too.Her parents wanted to prevent her,but she didn’t listen to

them and they had to agree to her choice.They engaged an old man who was good at music as a private teacher.

Five years passed.Mr.Young bought all kinds of musical instruments for Jenny and they visited some places where the famous singers were born.Of course he spent a lot of money on it.But he found the girl didn’t make any progress.At last the teacher didn’t think the girl could become a singer at all and had to tell Mr.Young about it.The man became angry and said,“Why didn’t you tell me about it earlier? My daughter learned nothing but I paid you month after month!”

“I think you should thank me for it,”said the teacher.“Another teacher, who teaches

badly,is paid more than I was.And I saved much money for you!”

小题1:Mr. Young was in school for a short time because______  .

A.he was too poor to go on studying

B.he had to help his parents

C.he was weak in his lessons

D.he didn’t like studying at all小题2:Jenny spent much money buying records and went to the concerts in order to ______

A.visit some places

B.know some pop stars

C.become a pop star

D.1earn singing小题3:Mr.Young became angry because______.

A.he paid a lot of money to the teacher

B.his daughter decided to drop music

C.his daughter spent four years on music

D.the teacher taught his daughter nothing

题型:多项选择题

系统疾病史包括()

A.有无药物过敏史

B.有无牙用材料过敏史

C.是否患有糖尿病

D.是否有传染性疾病史

E.以上都对

题型:多项选择题

起重机工作时,()进行检查和维护。

A.可以

B.不得

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