1880. A separate shading pattern to distinguish between supply, pressure, return etc, shall be used

A. The swivel nuts on both valves engage threads on an internal stem that loosens or draws tight the valve stem to a metal seat.

B. The rotating nuts on both valves are meshed with the threads on the inner valve stud, so that the valve stud is loosened or tightened to a metal valve base.

C. The swing nuts on both valves engage with the threads on the internal spool, allowing the spool to loosen or tighten to the metal seat.

A. If it is possible that the temperature values will be not less than the permitted limits, decrease the power, then the application of sealant must be carried out with a wooden spatula.

B. If it appears that the temperature limits will be exceeded, decrease the power, then the application of sealant must be carried out with a wooden spatula.

C. If it appears that the temperature limits will be decreased, increase the power, then the application of sealant must be carried out with a wooden spatula.

A. The Federal Aviation Regulations require “maximum continuous power to be used during airframe and engine combination certification to show obedience with certain criteria."

B. Federal aviation regulations require “maximum continuing power to be used during the certifying of the airframe and engine to meet certain criteria."

C. Federal aviation regulations， in combination of airframe and engine certification process， the use of “maximum continuous power"， are used to show compliance with certain standards.

A. 在这个姿态中,着陆模式在偏航轴提供跑道中心线对准,在俯仰轴提供改平。

B. 在这个姿态,着陆模式在偏航轴提供跑道中心线对准,在俯仰轴提供抬头姿态。

C. 在这个高度,着陆模式在偏航轴提供跑道中心线对准,在俯仰轴提供改平。

A. Write notes only to give content, not commands.

B. Write notes only to give information, not instructions.

C. Write cautions only to give information. Not orders.

A. Those components and manifold assemblies are used to dram off excess fluids from the powerplant and its accessories.

B. Those components and manifold assemblies which are used to drain off excess fluids from the powerplant or its accessories.

C. Those components and manifold assemblies which are used to drain off excess fluids from the powerplant and its accessories.

A. Use locally made tools for this test.

B. You made a local tool for test.

C. You make a tool locally for test.

A. When described the aircraft and its system, you should always use third people talking.

B. Generally, in describing the airplane or its system, third person wording should be used.

C. When you describing the airplane systems, third person mood shall be used.

A. There are three jacks onboard the fuselage.

B. There are three jacking adapters on the fuselage.

C. There are three jacking points on the fuselage.

A. 任何作为必要的安装或者拆卸程序的调试/测试应该按合适的顺序在文本中显示。

B. 任何作为必要的安装或者重新启动激活程序的调试/测试应该按合适的顺序在文本中显示。

C. 任何作为必要的安装或者重新启动激活程序的校验/测试应该按合适的顺序在文本中显示。