1. [单选题]白棕绳受潮后,强度比原绳降低约:()
A. 1/5
B. 1/4
C. 1/3
D. 1/2
2. [单选题]封舱灭火向舱内施放1211时,应在多长时间内一次施放足量?
A. 40秒
B. 30秒
C. 20秒
D. 10秒
3. [单选题]美国《90油污法》规定,造成油污染事故的3000总吨以下的液货船赔偿限额为每总吨1200美元,或总额_____万美元,取其大者。
A. 50
B. 100
C. 200
D. 500
4. [单选题]反复多次用药后,机体对该药的敏感性降低,此称为()
A. 习惯性
B. 耐药性
C. 抗药性
D. 成瘾性(addiction)
5. [单选题]下列哪些船舶应用适合当时环境和情况的一切有效手段判断是否存在碰撞危险?I、大风浪中航行;II、货舱起火,正在灭火;III、船体破损进水正欲抢滩
A. I、II、III
B. I、III
C. II、III
D. I
6. [单选题]修理过度磨损的钢质活塞环(steel piston rings)槽可采用_______方法使之恢复原始尺寸
A. 光车
B. 喷焊
C. 光车+镀铬
D. 镀铁
7. [单选题]What is the main problem lied in the ship recycling industry?
A. It lies in the sustainable development
B. It is about how to recycle the ship as they can as possible
C. It is a big problem concerning environment, safety and health
D. The big problem is that ship-recycling will violate the regulations made by IMO
8. [单选题]机舱发生火警误报警,离子式火警探测器因( )是常见的原因。
A. 线路干扰
B. 镅241发射离子减少
C. 油气污染检测室
D. 环境温度较高
9. [单选题]A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an
A. turbocharger malfunction or failure
B. crankcase exhauster overload
C. overload on the intercooler
D. obstruction in the engine cylinders
10. [单选题]救生艇应设一盏可控制的环照灯,其颜色为:
A. 红光
B. 白光
C. 黄光
D. 兰光