更多"[单选题] When reversing, the tidal str"的相关试题:
[单选题] When reversing , the tidal stream will have a period with little or no effect . This is called the _______ .
A. Rise
B. Range
C. Slack
D. Spring
[单选题]When the ship moves forward,after reversing,the engine is restarted but the crankshaft rotates in
A.the astern direction
B.the right direction
C.the ahead direction
D.the left direction
[单选题]Only when you have acquired a good knowledge of grammar__write correctly.
A.you will
B.you can
C.can you
D.can't you
[单选题]When we say the two objects have relative motion,we mean___.
A.the distance between them remains the same
B.the distance between them is changing
C.the positions of either of them to the earth remain the same
D.their positions to the earth remain the same.
[单选题]We have planned to remove the pistons when the vessel Dalian.
A.call to
B.calls to
C.calls at
D.calls on
[单选题] What is the tidal height?
A.Twice the tide amplitude
B.The range of the tide
C.The water above the Lowest Astronomical Tide
D.The height above or under the mean level
[单选题] The velocity of a rotary tidal current will be decreased when the Moon is ______．
A.at apogee
B.new
C.full
D.All of the above
[单选题] He paid for a seat, when he _____ have entered free.
A. could
B. would
C. must
D. need
[单选题] You have been towing astern and have just let go the tow．Your deckhands are pulling in and faking the towline by hand on the stern．The most dangerous action to take is to ______．
A.continue ahead at slow speed
B.continue ahead at half speed
C.stop your engines
D.back down on your engines
[单选题]当机轮温度过高时有什么警告？（ ）
When the wheel when the temperature is too high to have what warning?
A.ECAM，主警戒，声音，灯光
ECAM, the main warning, sound, lights
B.ECAM，主警戒，声音
ECAM, the main warning, sound
C.主警戒，声音，灯光
the main warning, sound, lights
[单选题]导管相关性血流感染（catheter related biood stream infection,CRBSI）是指带有血管内导管或者拔除血管内导管( )内的患者出现菌血症或真菌血症，并伴有发热（T>38℃）寒战或低血压等感染表现，除血管导管外没有其他明确感染源
A.8小时
B.12小时
C.24小时
D.48小时
[单选题] When should operational check on navigation equipment be done?
A. Regulary, when preparing for sea and entering port
B. As often as possible
C. When errors are indicated
D. When time allows
[单选题] A tide is called diurnal when
A. only one high and one low water occur during a lunar day
B. the high tide is higher and the low tide is lower than usual
C. the high tide and low tide are exactly six hours apart
D. two high tides occur during a lunar day
[单选题] When transferring survivors from an enclosed lifeboat to a rescue vessel，personnel on board the boat should ______．
A.remove their life preservers to make it easier to climb on board the rescue vessel
B.climb on top of the boat while waiting for their turn to transfer to the rescue vessel
C.remain seated inside and make the transfer one person at a time
D.enter the water and swim over to the rescue vessel
[单选题] When collecting condensation for drinking water，______．
A.A sponge used to mop up and store condensation must be kept salt free
B.Only condensation on the bottom of the canopy should be collected
C.It should be strained through a finely woven cloth
D.Chlorine tablets should be used to make it drinkable
[单选题] When administering artificial respiration，it is MOST important to ______．
A.Monitor blood pressure
B.Clear airways
C.Use the rhythmic pressure method
D.Know all approved methods
[单选题] When should voyage planning be done?
A. During the sailing
B. Prior the sailing
C. After sailing
D. Before the pilot is leaving
[单选题] When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind，the approach is best made ______.
A. with bow out，stern in
B. with bow in，stern out
C. parallel to the dock，as close in as possible
D. parallel to the dock，as far out as possible
[单选题] When anchoring a vessel under normal conditions，which scope of chain is recommended ________．
A.Four times the depth of water
B.Two and one-half times the depth of water
C.Five to seven times the depth of water
D.Fifteen times the depth of water
