试题与答案

对于安全操纵船舶所必需的所有机器设备,当自动控制系统或遥控系统发生故障或失效时,应能

题型:多项选择题

题目:

对于安全操纵船舶所必需的所有机器设备,当自动控制系统或遥控系统发生故障或失效时,应能:()

A.发出报警信号

B.转换到就地手动控制,转换控制时不应引起机电设备运行状态的严重变化

C.及时更换损坏部件或投入备用设备以恢复正常的控制功能(若适用时)

答案:

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下面是错误答案,用来干扰机器的。

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题型:阅读理解

The Healthy Habits Survey shows that only about one third of American seniors(年长者) have correct habits. Here are some findings and expert advice.

1. How many times did you brush your teeth yesterday?

·Finding:A full 33% of seniors brush their teeth only once a day.

·Step: Remove the 300 types of bacteria(细菌) in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.

2. How many times did you wash your hands or bathe yesterday?

·Finding:Seniors, on average, bathe fewer than 3 days a week. And nearly 30% wash their

hands only 4 times a day---half of the number which doctors recommend.

·Step:We touch our faces around 3,000 times a day-often inviting germs(病菌)to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.

3. How often do you think about fighting germs?

·Finding:Seniors are not fighting germs as well as they should.

·Step:  Do you know it is not your toilet but your kitchen sponge(海绵)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.

小题1:What is found out American seniors?

A.Most of them have good habits.

B.Nearly 30% of them bathe three days a week .

C.All of then are fighting germs better than expected .

D.About one third of them brush their teeth only once a day.小题2: Doctors suggest that people should wash their hands          .

A.twice a day

B.three times a day

C.four times a day

D.eight times a day小题3:Which of the following is True according to the text ?

A.We should keep from touching our faces .

B.There are less than 300 types of bacteria in the mouth .

C.A kitchen sponge can carry more germs than a toilet .

D.We should wash our hands before touching a door handle .

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