2026年知到答案 地面理论与航空系统工程 最新知到智慧树满分章节测试答案

第一章 单元测试

1、 问题:With respect to the certification of airmen, which is a category of aircraft? （ ）
选项：
A:Gyroplane, helicopter, airship, free balloon
B:Airplane, rotorcraft, glider, lighter-than-air
C:Single-engine land and sea, multiengine land and sea
答案: 【
Airplane, rotorcraft, glider, lighter-than-air
】

2、 问题:With respect to the certification of airmen, which is a class of aircraft? （ ）
选项：
A:Airplane, rotorcraft, glider, lighter-than-air
B:Single-engine land and sea, multiengine land and sea
C:Lighter-than-air, airship, hot air balloon, gas balloon
答案: 【
Single-engine land and sea, multiengine land and sea
】

3、 问题:With certain exceptions, safety belts are required to be secured about passengers during （ ）
选项：
A:flight in turbulent air.
B:all flight conditions.
C:taxi, takeoffs, and landings.
答案: 【
taxi, takeoffs, and landings.
】

4、 问题:With respect to the certification of aircraft, which is a category of aircraft （ ）
选项：
A:Normal, utility, acrobatic.
B:Airplane, rotorcraft, glider.
C:Landplane, seaplane.
答案: 【
Normal, utility, acrobatic.
】

5、 问题:With respect to the certification of aircraft, which is a class of aircraft? （ ）
选项：
A:Normal, utility, acrobatic, limited.
B:Airplane, rotorcraft, glider, balloon.
C:Transport, restricted, provisional.
答案: 【
Airplane, rotorcraft, glider, balloon.
】

第二章 单元测试

1、 问题:It is important to ensure that the surfaces of an aircraft wing are clean. Small paint chips, excessive bugs, or dirt can reduce the efficiency of the wing. This type of drag is called（ ）
选项：
A:interference drag.
B:induced drag.
C:skin friction.
答案: 【
skin friction.
】

2、 问题:The angle between the chord line of an airfoil and the relative wind is known as the angle of（ ）
选项：
A:lift.
B:attack.
C:incidence
答案: 【
attack.
】

3、 问题:The left turning tendency of an airplane caused by P-factor is the result of the（ ）
选项：
A:propeller blade descending on the right, producing more thrust than the ascending blade on the left.
B:clockwise rotation of the engine and the propeller turning the airplane counter- clockwise.
C:gyroscopic forces applied to the rotating propeller blades acting 90° in advance of the point the force was applied
答案: 【
propeller blade descending on the right, producing more thrust than the ascending blade on the left.
】

4、 问题:What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?（ ）
选项：
A:Lift equals weight and thrust equals drag.
B:Lift and weight equal thrust and drag.
C:Lift, drag, and weight equal thrust.
答案: 【
Lift equals weight and thrust equals drag.
】

5、 问题:Wing fences（ ）
选项：
A:improve aircraft handling at slower airspeeds.
B:reduce parasite drag.
C:reduce control pressures.
答案: 【
improve aircraft handling at slower airspeeds.
】

第三章 单元测试

1、 问题:What mechanism regulates oil pressure in a typical aircraft reciprocating engine? （ ）
选项：
A:oil dilution.
B:a pressure relief valve.
C:an oil filter.
D:boil-off.
答案: 【
a pressure relief valve.
】