A、use the float-free method only
B、lower all boats
C、raise all boats
D、drill is over，secure all boats
更多“When whistle signals are used for launching lifeboats，one short blast means（）.”相关的问题
A、a light signal of at least five short and rapid flashes B、one prolonged，one short，one prolonged，and one short whistle blasts C、four short whistle blasts D、two short whistle blasts
A、A.When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal B、B.Only the stand-on vessel can sound the danger signal C、C.Distress signals may be used in place of the danger signal D、D.The danger signal consists of 4 or more short blasts of the whistle
A、A.More than six short blasts and one long blast on the whistle B、B.Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm C、C.Three short blasts of the whistle supplemented by the same signal on the general alarm D、D.More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm
A、more than 6 short blasts and 1 long blast on the whistle，and the same signal on the general alarm B、continuous sounding of the ship's whistle and the general alarm for at least 10 seconds C、1 short blast on the whistle D、alternating short and long blasts on the ship's whistle
A、3 short blasts of the ship's whistle B、1 short blast of the ship's whistle C、3 long blasts of the ship's whistle D、1 long blast of the ship's whistle
A、Directing the beam of a searchlight at another vessel B、A smoke signal giving off orange colored smoke C、A whistle signal of one prolonged and three short blasts D、International Code Signal "PAN" spoken over the radiotelephone
A、A.Directing the beam of a searchlight at another vessel B、B.A smoke signal giving off orange colored smoke C、C.A whistle signal of one prolonged and three short blasts D、D.International Code Signal PAN spoken over the radiotelephone
A、hold course and sound a two blast whistle signal B、hold course and sound no whistle signal C、change course to the right and sound one blast D、hold course and sound two prolonged and two short blasts
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