更多"[单选题]The _______ displays the speed"的相关试题:
[单选题]The _______ is used to measure static air pressure.
A.pitot tube
B.static tube
C.tachometer
D.altimeter
[单选题]When the alternate source of static pressure (vented inside an unpressurized airplane) is used, _______ .
A.the altimeter may indicate higher than the actual altitude being flown
B.the airspeed indicator may indicate slower than the actual airspeed being flown
C.the turn needle may become inoperative
D.the vertical speed indicator may indicate a continuous descent
[单选题]The airspeed indicator, altimeter, and vertical speed indicator all use static pressure, but only the _______ uses pitot pressure.
A.vertical speed indicator
B.altimeter
C.airspeed indicator
D.tachometer
[单选题]Lift is proportional to the square of the airplane’s velocity. If an airplane’s speed is doubled, lift increases _______ .
A.two-fold
B.three-fold
C.four-fold
D.eight-fold
[单选题]Lift is proportional to the square of the airplane’s velocity. If an airplane’s speed is reduced by one half, lift _______ .
A.is doubled
B.increases four fold
C.is decreased to one half of the previous value
D.is decreased to one quarter of the previous value
[单选题]_______ is defined as the actual speed of the airplane over the ground. It is true speed adjusted for wind.
A.TAS
B.GS
C.CAS
D.IAS
[单选题]The instrument connected to the dynamic and static pressure system is called _______.
A.vertical speed indicator
B.turn indicator
C.cockpit altimeter
D.bank indicator
[单选题]_______ is the speed which allows the airplane to remain aloft while using the least amount of power necessary to sustain level flight.
A.Maximum endurance speed
B.Minimum endurance speed
C.maximum range speed
D.minimum range speed
[单选题]When flight speed is constant, the greater the air density,
A.the greater the lift
B.the less the lift
C.the less the thrust required
D.the less the engine output power
[单选题]The basic principle of pressure differential, also known as _______ , says “as the velocity of a fluid (air) increases, its internal pressure decreases”.
A.Bernoulli’s principle
B.Newton’s principle
C.Bernoulli’s law of motion
D.Newton’s law of motion
[单选题]Besides streamlining the nose of the airplane, the _______ helps cool the engine by ducting air around the cylinders.
A.propeller
B.cowling
C.firewall
D.hood
[单选题]The _______ is used to measure ram air pressure.
A.static tube
B.pitot tube
C.tachometer
D.altimeter
[单选题]The three vectors in the air line speed triangle are _______ respectively.
A.V vector, U vector, W vector
B.A vector, B vector, C vector
C.X vector, Y vector, Z vector
D.A vector, V vector, Y vector
[单选题]The _______ measures how fast the ambient air pressure is increasing or decreasing when the aircraft climbs or descends.
A.attitude indicator
B.vertical speed indicator
C.tachometer
D.altimeter
[单选题]The atmospheric circulation occurs through a process known as _______, which is defined as the circular motion that results when warm air rises and is replaced by cooler air.
A.convection
B.connection
C.connection
D.oncentration
[单选题]One group of flight instruments operates on the principle of pressure differential to provide the pilot with speed, rate of climb or descent, and altitude, this group is referred to as the _______ instruments.
A.gyroscopic
B.pitot-static
C.altitude
D.attitude
[单选题] Under most flying conditions, the impact pressure and the _______ of air from the lower surface of the wing provide less than 25 percent of the total lift.
A.deflection
B.inflection
C.reflection
D.affliction
[单选题]Uneven heating modifies air density and creates circulation patterns, resulting in changes in pressure. This is one of the main reasons for differences in _______ between weather reporting stations.
A.altimeter readings
B.altimeter settings
C.distance
D.temperature
[单项选择]The airplane was reported to have crashed.
A. 飞机被报告即将坠毁。
B. 飞机被报道即将坠毁。
C. 据报道，飞机即将坠毁。
D. 据报道，飞机已坠毁。
