
【名词&注释】
柴油机(diesel engine)、活塞环(piston ring)、上层建筑(superstructure)、机动船(motor vessel)、驾驶台(driving platform)、火灾报警器(fire alarm)、适用于(suitable for)
[单选题]柴油机吊缸时对活塞环进行检查和测量的项目有()。Ⅰ.径向厚度(磨损)测量Ⅱ.搭口间隙测量Ⅲ.天地间隙测量Ⅳ.环背隙测量Ⅴ.环弹力检查Ⅵ.表面损伤检查
A. Ⅰ+Ⅲ+Ⅴ
B. Ⅱ+Ⅲ+Ⅴ+Ⅵ
C. Ⅰ+Ⅱ+Ⅲ+Ⅴ+Ⅵ
D. Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ+Ⅵ
查看答案&解析
举一反三:
[单选题]“间接扑灭”不适用于(suitable for):
A. 火情已查明;
B. 火情未查明;
C. 火势猛,不易控制;
D. 人员根本无法接近。
[单选题]手揿式火灾报警器(fire alarm)装在下面哪些处所?
A. 驾驶台
B. 上层建筑
C. 机舱
D. 以上均是
[单选题]It’s getting dark. Please ________ the cargo lights.
A. turn away
B. turn off
C. turn on
D. turn in
[单选题]If a used lube oil analysis indicates excessive chromate content, this means
A. air filtration is inadequate
B. engine coolant is leaking into the lube oil
C. fuel oil is leaking into the lube oil
D. the piston rings are excessive worn
[单选题]狭水道右行规则适用于(suitable for)________。
A. 非机动船之外的任何船舶
B. 除长度小于20米的船舶和帆船以外的任何船舶
C. 除失控船,操限船外的所有船舶
D. 任何沿狭水道或航道行驶的船舶
[单选题]When anaerobic bacteria convert the sewage to an inert sludge, .
A. no oxygen is needed
B. oxygen is necessary
C. oxygen is given off
D. no gas is produced
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