In the sky，the helicopter tumed at an() angle before righting itself.A. unhealthyB. awfulC. cruelD. Unnecessary
In the sky，the helicopter tumed at an() angle before righting itself.
A. unhealthy
B. awful
C. cruel
D. Unnecessary
B. awful
C. cruel
D. Unnecessary
参考解析
解析：A不健康的: B可怕的: C残酷的: D不必要的。根据句意，在空中，直升机以一个可怕的角度旋转后才扶正。
相关考题：
The “rudder adjustment” control on an autopilot steering stand is used to ______.A.align the rudder angle indicator with the true rudder angleB.set the number of degrees of rudder per degree of course errorC.set the departure from base course before actuating the rudderD.set the rate at which the rudder responds
A liferaft which has inflated bottom-up on the water ______.A.should be righted by standing on the carbon dioxide cylinder，holding the righting straps and leaning backwardsB.should be righted by standing on the life line，holding the righting straps leaning backwardsC.will right itself when the canopy tube inflatesD.must be cleared of the buoyant equipment before it will right itself
The primary danger in helicopter fires is ______.A.burning jet fuel running on to quarters or other areasB.loss of stabilityC.rotating and flying debrisD.heat damage to helicopter structure
A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is ______.A.positiveB.negativeC.zeroD.vertical
The righting moment can be determined by multiplying the displacement by the ______．A.vertical center of gravity（KG）B.longitudinal center of gravity（LCG）C.righting arm（GZ）D.center of gravity（CG）
When a wind force causes a floating ship to heel to a static angle，the ______．A.Centers of buoyancy and gravity are in the same vertical lineB.Righting moment equals the wind-heeling momentC.Downflooding point is below waterD.Deck-edge immersion occurs
______is an angle at which a cargo settles in the hold of a ship，between the horizontal and the slope made by a bulk cargo such as grain or iron ore．A.Angle of lollB.Angle of inclinationC.Angle of reposeD.Angle of list
If the result of loading a vessel is an increase in the height of the center of gravity, there will always be an increase in the ______.A.metacentric heightB.righting armC.righting momentD.vertical moments
If the vertical center of gravity (VCG) of a ship rises 1.7 feet, the righting arm (GZ) for the various angles of inclination will ______.A.decreaseB.increaseC.remain unchangedD.be changed by the amount of GG’ x cosine of the angle
单选题The actual rudder angle reading is（）Athe rudder angle indicator readingBthe desired rudder angle readingCthe measured rudder angle readingDthe intended rudder angle reading
单选题At an angle of loll，the righting arm (GZ) is（）.AmaximumBnegativeCpositive，but reflexiveDzero
单选题Cross curves of stability show which of the following?（）.AThe righting arms at various angles of inclination and displacementBThe metacentric height at large angle of heelCThe height of the center of buoyancy at various anglesDThe metacentric radius at various angles
单选题For a given displacement，the righting arm has its maximum value when（）.AKG is minimumBangle of inclination is a maximumCsmall-angle stability appliesDKM is a minimum
单选题If the cause of a sudden severe list or trim is negative initial stability，counter flooding into empty tanks may（）.Aincrease the righting momentBcause an increase in the righting armCbring the unit to an upright equilibrium positionDcause the unit to flop to a greater angle
单选题If the liferaft capsizes，all personnel should leave the raft and（）.Aclimb onto the bottomBswim away from the raftCright the raft using the righting strapDinflate the righting bag
单选题The angle of maximum righting arm corresponds approximatelyto the angle of（）.Adeck edge immersionBthe load lineCdownfloodingDloll
单选题A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.ApositiveBnegativeCzeroDvertical
单选题The primary danger in helicopter fires is（）.Aburning jet fuel running on to quarters or other areasBloss of stabilityCrotating and flying debriDheat damage to helicopter structure
单选题In small angle stability，the metacentric height（）.Ais found in the hydrostatic tables for a level vesselBmultiplied by the displacement yields the righting momentCis always positiveDis calculated by subtracting KG from KM
单选题The only type of helicopter that may be refueled with the engine running and the blades turning is（）.Aa helicopter carrying cargo onlyBa turbine-equipped helicopterCa SikorskyDa helicopter carrying injured personnel in an emergency situation
单选题If the cause of severe list or trim is off-center ballast，counterflooding into empty tanks will（）.Aincrease the righting momentBincrease the righting armCincrease list or trimDdecrease list or trim
单选题A life raft which has inflated bottom-up on the water（）.Ashould be righted by standing on the carbon dioxide cylinder, holding the righting straps, and leaning backwardsBshould be righted by standing on the life line, holding the righting straps, and leaning backwardsCwill right itself when the canopy tubes inflateDmust be cleared of the buoyant equipment before it will right itself
单选题Mariners proceeding across the main routes are recommended to do so at（）.Aas wide an angle as practicableBas wide an angle so practicableClike wide an angle as practicableDlike wide as angle so practicable
单选题A liferaft which has inflated bottom-up on the water（）.Ashould be righted by standing on the carbon dioxide cylinder，holding the righting straps，and leaning backwardsBshould be righted by standing on the life line，holding the righting straps，and leaning backwardsCwill right itself when the canopy tubes inflateDmust be cleared of the buoyant equipment before it will right itself
单选题If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.Aincrease the righting momentBcause an increase in the righting armCbring the vessel to an upright equilibrium positionDcause the vessel to flop to a greater angle