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冰楔（ice wedge)
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更多 “冰楔（ice wedge)” 相关考题
考题
In cold, damp weather, the buildup of ice on airplane wings can pose significant aerodynamic problems. Which of the following effects would you expect?A.As ice builds up on the top of the wing, drag increases.B.As ice builds up on the top of the wing, lift increases.C.As ice builds up on bottom of the wing, lift decreases.D.All of the above
考题
_____ ice cream in the world is more delicious than American ice cream.A: NoneB: NeitherC: NotD: No
考题
A wooden float placed between a ship and a dock to prevent damage to both is called a ______.A.camelB.dolphinC.rat guardD.wedge
考题
You are on an ice-reinforced vessel about to enter packice．You should ______．A.enter the pack on the windward side where there is a well defined ice edgeB.trim to an even keel or slightly down by the bow to take maximum benefit of the ice reinforcementC.take maximum advantage of coastal leads caused by offshore windsD.look for areas of rotten ice and enter perpendicular to the ice edge
考题
In ice of higher concentrations ______ is not one of the basic applying rules．A.keep movingB.try to work with the ice movement，and not against itC.excessive speed means ice damageD.use full astern as often as possible
考题
单选题The purpose of this passage is to ______.A
frighten people with the rapid melting of the Greenland ice sheetB
urge people to take some measures to curb the melting of the Greenland ice sheetC
promote people’s environmental protection consciousnessD
let people know the time the Greenland ice sheet will take to melt
考题
单选题The scientists are not sure_______.A
how long the ice age lastedB
where ice sheets melted during the ice ageC
what caused the temperature changesD
what the earth is made up of
考题
单选题A wedge of water building up between the bow and nearer bank which forces the bow out and away describes（）.A
bank cushionB
bank suctionC
combined effectD
bend effect
考题
单选题Any friction fit, tightness or adhesion of the part of any load being lifted should be broken by wedge or tapping and not by increasing the load on the applianceAccording to this sentence, （）A
the lifting appliance can always lift the freight within its rated loadB
attention should be paid in order not to break the wedge when lifting cargoC
sometimes the lifting work needs other assistance other than the lifting applianceD
lifting work should be done with every part fit, tightness or adhesion
考题
单选题You are on an ice-reinforced vessel about to enter packice. You should（）.A
enter the pack on the windward side where there is a well defined ice edgeB
trim to an even keel or slightly down by the bow to take maximum benefit of the ice reinforcementC
take maximum advantage of coastal leads caused by offshore windsD
look for areas of rotten ice and enter perpendicular to the ice edge
考题
单选题Which of the following is the best title for the passage ?A
A computer modelB
Studies show ice melted equally in the North and the South during the ice ageC
Most of the ice melted in the Northern hemisphere during the 30,000-year long ice ageD
A survey result
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