质量改进的主要措施有（）。 A.纠正措施 B.调整措施 C.检验措施 D.预防措

A．tā xiānsheng 她先生

B．tā nǚ’ér 她女儿

C．tā de xuésheng 她的学生

阅读理解。

     Joanne was stuck in a traffic jam in central Birmingham at 5?30,and at 6?30 she was expected

to be chairing a meeting  of the tennis club. At last, the traffic was moving. She swung quickly

racing to her house. As she opened the door, she nearly tripped over Sheba.

    "Hey,Sheba," she said, "I've got no time for you now, but I'll take you out as soon as I get back

from the tennis club." Then she noticed Sheba seemed to be coughing or choking.  Obviously, she

could hardly breathe.  Immediately, Joanne realized she would have to take her to the vet (兽医)．

    When she got there, the vet was just about to close for the day. Seeing the state of Sheba, Dr.

Sterne brought her quickly into his office.

    "Listen, doctor, I'm really in a rush to get to a meeting, can I leave her with you,and go to get

changed? I'll be back in ten minutes to pick her up, and then I'll take her on to the meeting with

me. Is that OK?"

    "Sure." said the doctor.

    Joanne made the quick trip back to her house in a couple of minutes. As she was once more

entering the hallway, the phone by the door began to ring.

    "This is Dr. Sterne," said an anxious voice. "I want you to get out of that house immediately,"

said the doctor's voice. "I'm coming round to right away, and the police will be there any time

now. Wait outside!"

    At that moment, a police car screeched to a stop outside the house.  Two policemen got out

and ran into the house. Joanne was by now completely confused and very frightened. Then the

doctor arrived.

"Where's Sheba? Is she OK?" shouted Joanne.

"She's fine,Joanne. I took out the thing which was choking her,and she's OK now."

Just then, the two policemen reappeared from the house, carrying a whitefaced man, who could

hardly walk. There was blood all over him.

"My God," said Joanne, "how did he get in there? And how did you know he was there?"

"I think he must be a burglar." said the doctor. "I knew he was there because when I finally

removed what was stuck in Sheba's throat, it turned out to be three human fingers."

1. What was Joanne supposed to do at 6:30?

A. To walk her dog.

B. To see her doctor.

C. To attend a club meeting.

D. To play tennis with her friends.

2. Joanne wanted to get back to her home again ________.  

A. to dress up for the meeting

B. to phone the police station

C. to catch the badly hurt burglar

D. to wait for her dog to be cured

3. From the passage, we can infer that ________.

A. Sheba fought against the burglar

B. the police found the burglar had broken in

C. Joanne had planned to take her dog to the meeting

D. the doctor performed a difficult operation on the dog

4. In this passage, the writer intends to tell us that the dog is ________.

A. clever      

B. friendly  

C. frightening  

D. devoted

一台发电机最大输出功率为4000kW，电压为4000V，经变压器T₁升压后向远方输电。输电线路总电阻R=1kΩ。到目的地经变压器T₂降压，负载为多个正常发光的灯泡（220V、60W）。若在输电线路上消耗的功率为发电机输出功率的10%，变压器T₁和T₂的耗损可忽略，发电机处于满负荷工作状态，则[ ]

A．T₁原、副线圈电流分别为10³A和20A

B．T₂原、副线圈电压分别为1.8×10⁵V和220V

C．T₁和T₂的变压比分别为1：50和40：1

D．有6×10⁴盏灯泡（220V、60W）正常发光

耐火电缆的主要优点是（）。

A.在火焰燃烧条件下保持一定时间的供电；

B.抑制火灾；

C.火灾过程中降低毒性；

D.以上都对。

矿井生产系统包括哪几部分？