When rigging a stage，the standing part should be fastened to the horns of a stage with which of the following hitches ________．A.Clove hitchB.Timber hitchC.Marlinespike hitchD.Double blackwall hitch
When rigging a stage，the standing part should be fastened to the horns of a stage with which of the following hitches ________．
A.Clove hitch
B.Timber hitch
C.Marlinespike hitch
D.Double blackwall hitch
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单选题A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.Awearing a life jacketBwearing a safety harness secured to the stageCwearing both a life jacket and a safety harness secured to the stageDthe vessel is not making way
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单选题In the operation of a flash type evaporator equipped with air ejectors,the air and non- condensable gases are evacuated directly from the （）.Afirst stage flash chamberBsecond stage flash chamberCfirst stage after condenserDsecond stage distilling condenser
单选题When rigging a stage，the standing part should be fastened to the horns of a stage with which of the following hitches（）.AClove hitchBTimber hitchCMarlinespike hitchDDouble blackwall hitch
单选题What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.AJacob's ladderBManropesCHeaving linesDAll of the above
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