单项选择题

Changing rescuers while carrying out artificial respiration should be done（）.

A.without losing the rhythm of respiration
B.only with the help of two other people
C.by not stopping the respiration for more than 5 minutes
D.at ten minute intervals

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热门试题

单项选择题Carbon dioxide as a fire fighting agent has which advantage over other agents?（）

A.It causes minimal damage
B.It is safer for personnel
C.It is cheaper
D.It is most effective on a per unit basis

单项选择题Camphor oil is classified as a（）.

A.Grade A flammable liquid
B.Grade C flammable liquid
C.Grade D combustible liquid
D.Grade E combustible liquid

单项选择题By regulation，you MUST keep a record of the use of your radiotelephone for a minimum of（）.

A.six months
B.one year
C.two years
D.thirty months

单项选择题By law，a user of marijuana shall be subject to（）.

A.loss of pay during the period of such use
B.reprimand by the US Coast Guard
C.revocation of license or certificate
D.termination of employment

单项选择题By definition，a spar deck is the（）.

A.lower most continuous deck not broken by water tight bulkheads
B.after most weather deck above the main strength deck
C.upper or weather deck above the main strength deck
D.deck of light construction below the main or strength deck