更多"[单选题] The purpose of air tanks in a"的相关试题:
[单选题]空调舱通风的目的是什么（ ）What purpose is of the air conditioning compartment ventilation system
A.防止空调舱结构损坏To prevent damage to structure of the air conditioning compartment
B.去除烟雾 To remove smoke
C.降低空调组件的出口温度 Reduced the outlet temperature of the PACK
[单选题] Preventer bars are fitted on lifeboat releasing hooks to prevent ______.
A. the falls from unhooking if the releasing gear is operated accidentally while the boat is being lowered
B. operation of the release lever until the boat is waterborne
C. the falls from rehooking after they have been released.
D. accidental unhooking when the falls become slack
[单选题] When backing a motor propelled lifeboat（right-hand propeller）with the rudder amidships，the stern will back ______．
A.straight
B.to port
C.to starboard
D.None of the above
[单选题] When landing a lifeboat through heavy surf with a strong current running parallel to the beach（from right to left when facing from seaward）the recommended procedure is to______．
A.approach while coming to the left to take advantage of the current
B.drop an anchor outside the surf line，then pay out anchor line over the bow while the seas carry the boat toward the beach
C.approach slow enough so that the boat can be brought around to meet breaking seas on the bow
D.rig a drogue with tripping line over the bow，back ashore with drogue tripped between breakers
[单选题] If the coxswain of your lifeboat gives the command HOLD WATER you should ______．
A.complete the stroke，raise your oar slightly，swinging the oar slightly forward，and place it in the boat
B.lift the oar in a vertical position
C.complete the stroke and hold the oar out of the water
D.dip the blade of your oar into the water vertically and hold it perpendicular to the keel line
[单选题] The length of the steering oar in a lifeboat is ______．
A.shorter than the rowing oars
B.the same length as the rowing oars
C.longer than the rowing oars
D.unrelated to the length of the rowing oars
[单选题] The steering oar in a lifeboat is usually referred to as the ______．
A.bumpkin oar
B.stroke oar
C.sweep oar
D.becket oar
[单选题] Prior to lowering the lifeboat, the most important item to check is the ______.
A. oars
B. sail
C. boat plug
D. life preservers
[单选题] When launching a lifeboat in the rough sea，the davit gears should be released ______．
A.before the boat is lowered from the stowed position
B.as the boat fall blocks break clear of the davit head
C.before the boat is lowered from the embarkation level
D.after the boat is released into the water
[单选题] When in command of a lifeboat under oars，the command TOSS OARS means to ______．
A.lift oars to vertical position，trim blades fore and aft with handles resting on the thwarts
B.complete the stroke，come to Oars，raise the oars smartly to the vertical，rest handles on footings and trim blades fore and aft（立浆）
C.place oars in row locks directly from the boated position or from Stand by oars position
D.complete the stroke（when rowing in ahead motion），raise the oars with crook of elbow to about 30 degrees，swing blades forward
[单选题] The number 2 lifeboat on a tanker would be ______．
A.Forward most on the port side
B.Forwardmost on the starboard side
C.Abaft No.1 lifeboat port side
D.Abaft No.1 lifeboat starboard side
[单选题] The launching ramp for the lifeboat is ______．
A.the roller
B.the skid
C.the slide
D.the davit
[单选题] Bulkheads forming part of the tanks on a ship are stiffened to withstand ______.
A. Deck loads from above
B. Dynamic forces while afloat
C. Hydrostatic pressure
D. Overpressurization
[单选题] __sucks the oil from the tanks and delivers it through filters and oil coolers to the bearings.
A.The cooling water pump
B.The fuel oil pump
C.The lubricating oil pump
D.The diesel oil pump
[单选题] Sufficient cargo tanks shall be ______ prior to each ballast voyage in order that，taking into account the tanker's trading pattern and expected weather conditions，ballast water is put only into cargo tanks which have been crude oil washed．
A.Inerted
B.Crude oil washed
C.Gas freed
D.Battened down
[单选题]空调系统的空气来自哪里（ ）Where from the air of the air conditioning system
A.只来自发动机From engine only
B.只来自ＡＰＵFrom APU only
C.来自引气系统From the pneumatic system
[单选题] What is the purpose of VRM control?
A. To measure distance accurately
B. To measure bearing accurately
C. To measure range accurately
D. To adjust radar monitor
[单选题] What is the main purpose of DGPS?
A.Improve positioning accuracy
B.Decrease positioning accuracy
C.Reduce operational cost
D.I don't know
[单选题] What is the main purpose of dunnage?
A. To act as ballast for light vessels
B. To provide ventilation and drainage for cargo
C. To secure the tarpaulins in place
D. To support weakened builkheads
