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（）.
单项选择题 By definition，a "spar deck" is the（）.
单项选择题 As defined in the Rules，the term vessel includes（）.
