單項(xiàng)選擇題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


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

3.單項(xiàng)選擇題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

4.單項(xiàng)選擇題You are on a multiple product tanker and carrying methyl acrylate，diethanolamine，and triethylamine. Which statement is TRUE?（）

A.Methyl acrylate may be loaded in a tank adjacent to diethanolamine but not triethylamine
B.The heating coils to the cargo tank loaded with methyl acrylate must be blanked off
C.Valve components made of aluminum，copper，or zinc may not be in contact with the cargoes
D.Each crew member working on deck must have an emergency escape breathing apparatus