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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

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