Upon the completion of required tests, a ____ should be placed on each extinguisher, showing the date and the person who completed the tests.
A.cap
B.disc
C.tag
D.cover

A.罗马哈德良离宫花园B.巴黎凡尔赛宫花园C.意大利庞贝城花园D.法国枫丹白露花园

单项选择题

The International Oil Pollution Prevention Certificate ...

单项选择题The International Oil Pollution Prevention Certificate is valid for a period of
A.one year from the date of issue
B.five years from the date of issue
C.three years from the date of issue
D.four years from the date of issue

'Insufficiency of manning or insufficiency of certifica...

单项选择题'Insufficiency of manning or insufficiency of certification of seafarers' is an identification of a
A.substandard ship
B.standard ship
C.over-standard ship
D.reference ship