1124. Center of gravity is the point at which an airplane would balance if suspended .Its distance from the reference datum is: found by dividing the total moment by the total weight of the airplane.

74、在高压环境下工作时,应遵守安全注意事项。

73、厨房地板上方的水分可以通过地板表面的小洞渗入,肉眼是看不到的。

72、将其中一个空调组件电门置于高流量位。

71、The function and operation of each unit in the system should be described as well as the location of the units.

70. The basic control and operation information describes how the airplane components and systems are controlled and how they operate, including any special procedures and limitations that apply.

69、Ream the hole 0.20 inch larger than the standard.

68、确保液压油箱内的液压油高于最低液面。

67 、 This is the minimum concentration of flammable vapors in air below which propagation of flame does not occur on contact with a source of ignition. 这是空气中可燃蒸汽的最低浓度,低于此浓度时,与火源接触时火焰不会传播。

66、Correct the tension

65、Do the backup of the computer at regular intervals