单项选择题
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
Camphor oil is classified as a（）.A.Grade A flammable li...
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
By regulation，you MUST keep a record of the use of your...
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
By law，a user of marijuana shall be subject to（）.A.loss...
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
