输送机一般不允许带负荷启动,如遇特殊情况带负荷启车时,电动机只允许间隔性连续启动()次。
A、一
B、二
C、三
D、四
参考答案:D
第六部分:单词拼写(满分10分)
1. I have great a_________ for what you have done to help us to handle this problem.
2. One of the greatest drawbacks of the Internet is that it sometimes provides i____________ information.
3. When I come to a new place, it’ll take me a long time to get a____________ to it.
4. I’m ____________ (怀疑) of his ability to finish the task. He seems so careless.
5. The number of the deaths _________(由...引起) from road accidents has increased greatly over the past years.
6. After his __________(获得) of the diploma, he volunteered to work in the Northeast of China.
7. He had never sacrificed so much for the assignment that he __________ (延期) the date of his wedding.
8. I am fond of skiing while he is a_______ to skating.
9. Her books enjoy a high p_________ among teenagers in many countries.
10. Buses run ___________(频繁 ) between the city and the airport.
燃油系统有几个增压泵
A、1
B、2
C、3
D、4