2021船员专项训练每日一练(03月11日)

1. [单选题]关于活塞销的材料、结构与表面处理，正确的有________。I．铸铁II．合金钢III．中空结构IV．实心结构V．表面退火VI．表面淬火^{(surface hardening)}

A. III+IV+VI
B. I+II+III
C. IV+V+VI
D. II+III+VI

2. [单选题]所谓气阀间隙是指()

A. 气阀与阀座之间的间隙
B. 气阀与导管之间的间隙
C. 气阀的热膨胀间隙
D. 在柴油机热态下气阀阀顶端与摇臂头部之间间隙

3. [单选题]In the Second paragraph, the underline word "Who", in such a context, stands for_____.

A. the master or owner of the ship
B. the Administration
C. the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant Certificate
D. the appropriate authorities of the port State

4. [单选题]某轮罗航向030°，罗经差ΔC-3°，则该轮的真航向TC等于：()

A. 033°
B. 027°
C. 27°
D. ABC都对

5. [单选题]A small boat takes pilots to and from ships, it’s called a ________

A. fishing boat
B. tug
C. pilot boat
D. barge

查看答案&解析 点击获取本科目所有试题

本文链接：https://www.zhukaozhuanjia.com/download/v9lz7l.html