以下试题来自:固体散装危险品与BC规则题库

单项选择题After the passage of a cold front the visibility().

A.does not change
B.improves rapidly
C.improves only slightly
D.becomes poor

您可能感兴趣的试卷

你可能感兴趣的试题

2After sending a message describing the symptoms of an ill crew member,you receive a message containing the code MRL. This means “()”.

A.Apply ice-cold compress and renew every 4 hours
B.Commence artificial respiration immediately
C.Give enema
D.Pass catheter into bladder

3After reporting a casualty to a mobile offshore drilling unit,which record must be retained on board? ()

A.Record of drafts
B.Hull reports
C.Anchor record
D.Machinery repair book

4After putting on a self-contained breathing apparatus,you open the air supply and hear a continuous ringing of a bell. What does this mean? ()

A.The unit is working properly
B.The face mask is not sealed properly
C.The air bottle needs to be refilled
D.The air supply hose has a leak

5According to the Chemical Data Guide,epichlorohydrin is a(n)().

A.corrosive
B.class B poison
C.oxidizer
D.explosive