A.ITUB.IMOC.MSCD.WMO（）is the united nations agency resp……

单项选择题The purpose of the GMDSS is to（）safety of life and property at sea all over the world.

A.promote
B.improve
C.guarantee
D.both A and B

单项选择题The first communication satellite was used for the purpose of（）.

A.taking the place of the radio system
B.introducing a new life-saving system
C.saving the vessels in distress
D.improving the communication on land

单项选择题A sailor on board（）from appendicitis and required operation immediately.

A.was suffering
B.is suffering
C.has suffered
D.has been suffering

单项选择题The foreign seafarers said goodbye to us and looked forward to（）each other soon.

A.see
B.seeing
C.be seen
D.being seen

单项选择题In the IMO SMCP the situations（）phrases using the work “can” appear it clear whether a possibility is referred to.

A.where
B.when
C.after
D.unless