救生圈证书有效期至2022年1月。
A. The lifebuoy will expire till Jan.2022.
B. The certificate of lifejacket are valid till Jan.2022.
C. The certificate of lifebuoy will expire till Feb.2022.
D. The certificate of lifebuoy are valid till Jan.2022.
你们的固定灭火系统是什么类型的?
A. Which one is your fixed fire-fighting equipment?
B. Which is your fixed fire-fighting system?
C. What type is your fire-fighting equipment?
D. What type is your fixed fire-fighting system?
防污染装置被认为是最重要的设备。
Anti-pollution devices are considered the most important equipment.
B. Anti-pollution equipments are the most important .
C. Pollution devices are considered the most important equipment.
D. Safety devices are thought to be the most important equipment.
救生设备不齐全、不能正常使用。
A. The life boat equipment is not complete and operational.
B. The life boat equipment is not used properly.
C. The life jacket is not complete and operational.
D. The ship has serious deficiencies, it will be detained.
Which of the following words is 离心泵?
A. Gearwheel pump
B. Centrifugal pump
C. Ejector pump
D. Reciprocating pump
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