单项选择题
You have a large，broken-down vessel in tow with a wire rope and anchor cable towline. Both vessels have made provision for slipping the tow in an emergency; however，unless there are special circumstances（）.
A.the towing vessel should slip first
B.the vessel towed should slip first
C.they should slip simultaneously
D.either vessel may slip first
相关考题
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单项选择题
You are underway and pass by a lighthouse. Its light，which was white since you first sighted it，changes to red. This means（）.
A.the light is characterized as alternately flashing
B.the lighthouse has lost power and has switched to emergency lighting
C.it is the identifying light characteristic of the lighthouse
D.you have entered an area of shoal water or other hazard -
单项选择题
You are the first vessel to arrive at the scene of a distress. Due to the volume of traffic on the radio，you are unable to communicate with the vessel in distress. Which action should you take?（）
A.Switch to flag hoists
B.Broadcast "Seelonce Distress"
C.Broadcast "Charlie Quebec-Mayday-Quiet"
D.Key the microphone three times in quick succession -
单项选择题
You are on a multiple-product chemical tanker with orders to load diethylamine. What is NOT a requirement for transporting this cargo?（）
A.You must have two toxic vapor detectors or the pumproom must meet special requirements
B.Each crew member must be provided with an emergency escape breathing apparatus
C.A person taking cargo samples must wear protective clothing
D.If you are also carrying allyl alcohol，the venting systems must be segregated
