网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.
A
rollers
B
breakers
C
white caps
D
surfers
参考答案
参考解析
解析：
暂无解析
更多 “单选题In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.A rollersB breakersC white capsD surfers” 相关考题
考题
In the navigation,_______cause the shafting over load most easilyA.stopping the main engine suddenlyB.changing the main engine running direction suddenlyC.the sailing from the shallow water area to the deep water areaD.the ship's trim too much
考题
The mother whale failed to help her baby because__________.A. she had stayed in the polluted water for too longB. the whirlpools she had made were not big enoughC. she had no other whales around to tutu to for helpD. the waves pushed her baby in the wrong direction
考题
You are running into danger,________.A.shallow water ahead of youB.submerged wreck ahead of youC.risk of collision imminentD.A,B,C are all right
考题
单选题As the ocean water changes to ice, it keeps the temperature（）falling too far.A
withB
intoC
besidesD
from
考题
单选题A shallow dish positioned at the normal water level is connected to the（）This enables the blowing down or removal of scum and impurities from the water surface.A
main stern stop valveB
auxiliary steam stop valveC
scum valveD
blow down valve
考题
单选题If a tow sinks in shallow water，you should（）.A
release it immediatelyB
attempt to beach it before it goes underC
pay out cable until it's on the bottom and place a buoy on the upper endD
shorten cable to keep it off the bottom
考题
单选题When a ship is entering to shallow water, ship resistance will be increased and the speed of main engine reduced.Due to the function of the governor, the main engine will（）A
reduce fuel feedingB
increase fuel feedingC
keep original fuel feedingD
be overspeed
考题
单选题That（）is not caused by shallow water.A
turning ability deterioratesB
virtual mass increasesC
the effect of the propeller transverse thrust on yaw altersD
the ship will turn with its head towards the wind
考题
单选题Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in （）.A
waste of powerB
sudden sheering to either sideC
sluggish rudder responseD
All of the above
考题
单选题If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）A
a dirty lube oil strainerB
internal water leaksC
an oil suction line restrictionD
excessive wears of the cooling water pump
考题
单选题In the navigation, cause the shafting over load most easily（）A
stopping the main engine suddenlyB
changing the main engine running direction suddenlyC
the sailing from the shallow water area to the deep water areaD
the ship’s trim too much
考题
单选题In moderate wind and current what should be the length of chain with a single anchor?（）A
5 times the depth of the water in good holding groundB
10 times the depth of the water in shallow waterC
2 times the depth of the water in poor holding groundD
8 times the depth of the water in deep water
考题
单选题Which effect does speed through the water have on a vessel which is underway in shallow water （）.A
A decrease in the speed results in a decrease in steering response and maneuverabilityB
An increase in speed results in the stern sucking down lower than the BowC
An increase in speed results in the vessel rising on an even planeD
A decrease in speed results in the vessel sucking down on an even plane
考题
单选题The （） of the gravity disc is too big It causes oil to flow through the water outletWe changed the disc and no oil is found in the water outlet.A
gravityB
diameterC
circumferenceD
cylinder
考题
单选题（）can cause oil flow from water outlet of a separator.A
Oil inlet valve opening too quicklyB
Oil temperature too highC
Diameter of gravity disc too smallD
Viscosity of oil too low
考题
单选题Big waves turned ______ the boat, causing many people to fall into water.A
upB
downC
inD
over
考题
单选题The diameter of the gravity disc is too big It causes oil to flow through the water outlet We changed the disc and no （） is found in the water outlet.A
waterB
oilC
scaleD
ridge
考题
单选题A common occurrence when a vessel is running into shallow water is that（）.A
the wake is less pronouncedB
the vessel is more responsive to the rudderC
squat will cause a decrease in bottom clearance and an increase in draftD
All of the above
考题
单选题The largest waves (heaviest chop) will usually develop where the wind blows（）.A
at right angles to the flow of the currentB
against the flow of the currentC
in the same direction as the flow of the currentD
over slack water
考题
单选题During large storms, when waves crash against the beach, large amounts of sand is suspended in the water and may drift with the current.A
waves crash against the beach, large amounts of sand is suspendedB
the beach is crashed against by waves, large amounts of sand are suspendedC
the beach is crashed against by waves suspending large amounts of sandD
waves crash against the beach, large amounts of sand are suspendedE
waves crash against the beach, the suspending of large amounts of sand is
考题
单选题（）can not cause oil flow from water outlet of self-cleaning separator.A
Oil temperature too highB
Diameter of gravity disc too largeC
Oil temperature too lowD
High level tank out of water
考题
单选题A feed pump for an auxiliary boiler might lose suction if the （）.A
boiler water level is lowB
feedwater is too hotC
boiler steam demand is lowD
feedwater is too cold
考题
单选题Big waves turned_______the boat, causing many people to fall into water.A
upB
downC
inD
over
考题
单选题A current perpendicular to a vessel’s track has the greatest effect on the vessel’s course made good（）.A
at high vessel speedsB
at low vessel speedsC
in shallow waterD
in deep water
考题
单选题It is not feasible to build sea defenses to protect against erosion because _____.A
it is too costly and will endanger neighbouring areasB
the government is too slow in taking actionC
they will be easily knocked down by waves and currentsD
house agents along the coast do not support the idea
考题
单选题Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? （） (1) too little cooling water (2) too much cooling water (3) too warm cooler waterA
（1）onlyB
anyof（1），（2）and（3）C
anyof（1）and（3）D
anyof（1）and（2）
热门标签
最新试卷