试题预览
1
单选题
1分
- A. Chemical energy
- B. Mechanical energy.
- C. Thermal energy.
- D. Electrical energy.
2
单选题
1分
- A. electric
- B. mechanical
- C. heat
- D. exhaust
3
单选题
1分
- A. big size
- B. fuel economy
- C. low speed
- D. high power
4
单选题
1分
- A. turbine engine
- B. steam engine
- C. gas turbine
- D. internal combustion engine
5
单选题
1分
- A. a tug boat
- B. an oil tanker
- C. a salvage ship
- D. a motor vessel
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