1. Antennas are installed in the locations shown, A low drag design is ud for theVHF communication antennas天线被安装在如图所示的位置，低阻设计被用于基高频通讯天线
2. An airplane in flight is free to rotate about three axes：horizontal，longitudinal and vertical Each axis is perpendicular to the others and each pass through the center of gravity飞机在飞行中可以围绕3条轴转动，即水平轴纵轴垂直轴。每条轴线相互垂直，且都穿过重心
3. An airplane in flight is at the center of continuous tug-of-war between two pairs of opposing forces，lift oppos weight，and thrust oppos drag飞机在飞行中处在两对相反作用力抗衡的中心点上，升力与重力对抗，推力与阻力对抗
4. thrust is any force acting in the same direction as the airplane flight path（the motion of the airplane through the air）。Typically the power plant system(the engine and propeller)provides this force推力是一种沿着飞机飞行路径相同的方向起作用的力（飞机在空气中运动的路径）一般来说动力装置系统（即发动机和螺旋桨）提供推力
5. In straight-and-level, uncelebrated flights the forces about the aircraft center of gravity are balanced. Lift acts upward and is oppod by weight and the aerodynamic tail load which act downward 在直线水平且没有加速度的飞行中，围绕在飞机上的重心是平衡的，升力是向上作用的，它被飞机的重力和尾翼载荷也向下爆炒板鸭
性经6. Newton’s third law of motion states that for every action there is an equal and opposite reaction牛顿第三运动定律说道、针对每一个作用力都有一个与其方向相反大小相等的反作用力
豆腐箱子7. figure 1.1 the three axes of an aircraft are mutually perpendicular，and all pass through the center of gravity of aircraft飞行器的三条轴是相互垂直的而且都穿过飞行器的重心。
8. There are various surfaces located on the wings .On most aircraft, leading edge flaps and slats are located on the front of the wings, Leading edge flaps are sometimes called Krueger flaps, There are also inboard and outboard flaps on the trailing edge. The control surfaces are hydraulically powered and only extended or retracted during t
乳头瘙痒ake-off and landing在机翼上有各种舵面，在大部分飞行器中前缘襟翼和缝翼位于机翼前部, 前缘襟翼有时被称为克鲁格襟翼.还有内侧和外侧后缘襟翼。这些舵面由液压驱动,只在飞机起降期间收放。
9. Three primary jacking point.(A,B,C) are ud to rai and lower the airplane. The jacking points consist of jacking pads which are integral to the airplane body三个主要的顶起点 (A,B,C)被用来把飞机顶起或者放下。这些顶起点是由顶起座垫组成的。机身和垫座是一个整体。
10. External electrical power, 115 volts ascend 90KVA is supplied by external sources through a connection located near the no gear外部电源为115伏的交流电和90 千伏安是被一个位于起落架附近的电连接器连接的。
11. Airplane towing is accomplished by tow tractor and tow bar. Normal operation is accomplished by u of the no gear forward tow fitting飞机的牵引是由牵引车和牵引杆来完成的。正常操作是通过使用前起落架的牵引接头完成的。
12. The airplane structure incorporates advanced composite materials for their high strength-to-weight properties. As much as 25% weight savings have been realized on airplane components utilizing composite materials. 飞机结构采用了先进的符合材料，因为他们具有高强度重量比特性，飞机零件使用复合材料后节省了25%的重量青岛的景点
13. Graphite fiber like Kevlar is derived form a petroleum ba. The fibers are woven into fabric or tape and impregnated with epoxy石墨材料和凯夫勒一样是从石油产品中衍行出来的，纤维被编织成织物或带状，并且被浸入环氧树脂
14. In all cas where aluminum components come into contact with graphite parts, Fay surface protection is mandatory在所有情况下，铝接触到石墨组件部分，对它表面的保护是强制性的
15. Equipment racks are identified by an ‘E’ followed by number ,Additionally shelves within a rack are identified by a dash number starting from top to bottom设备支架式有一个字母E后跟一个数字来标识的，另外支架内的搁板是由破折号--表示的，它从上往下排列的
16. When replacing printed circuit cards remove system electrical power. A wrist strap must be worn by the technician and connected into the ELECTROSTATIC GEOUND JACK of the card file. This places the unit and technician ta the same potential preventing static damage to ESDS devices on the cord当更换印刷电路板时，要先拔掉系统电源。技术人员必须佩带腕带，丙炔吧腕带链接到静电接地插座上，这样就把技术人员和远见放在同一电位上，防止损坏静电放电设备
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17. The FAA issue mechanics and repairmen certificates, Mechanics can get either an airframe certificate or a power plant certificate-most mechanics get both 美国联邦航空局发布机械师证和修理人员的证书，机械师可以获得集体证书或者动力装置的证书，大部分机械师这两个证都有
18. You must be employed for a specific job requiring special qualifications by an FAA-certified Repair Station, commercial operator, or air carrier 你必须被由美国联邦航空局认可的修理站、商业运营商或者航空公司所雇用的从事一项需要专门资格的具体工作
19. You can attend one of the 170 FAR part147 Aviation Maintenance Technician Sch
ool nationwide. The school offer training for one mechanic’s certificate or both你可以选择全国范围内的170家符合美国联邦航空条例第147部要求的航空维修技术学院的其中一家去上学，这些学校会剔提供个到两个的机械师证的培训打呼噜怎么治小窍门
两个我20. You must prent an official letter form your military employer certifying your length if rvice, the amount of time you worked in each specialties你必须出示一份由你不对用人单位签署的正式函件，来证明你服役时间的长短，你在每个专业工作的时间的多少
