镇静催眠、镇痛等成瘾性药物必须在医生指导下服用，不能滥用。
参考答案：对
转债的利率( )。
A．经中国人民银行核准 B．经中国证监会核准C．由发行人确定 D．由发行人与主承销商商定
For pumping the bilges，a 54 foot long “T-Boat”，which is not a ferry，but is certificated to carry 30 passengers，must be fitted with at least（）.
A.one fixed power pump and one portable hand pump
B.one fixed hand pump and one portable hand pump
C.two portable hand pumps
D.either "A" or "B"
