A、 Use the upper latch mechanism to lock the lower display unit in the middle.
B、 The latch mechanism at the top is used to secure the center display unit on the bottom.
C、 The center lower display unit is installed with the latch mechanism at the top.
答案：C
A、 Use the upper latch mechanism to lock the lower display unit in the middle.
B、 The latch mechanism at the top is used to secure the center display unit on the bottom.
C、 The center lower display unit is installed with the latch mechanism at the top.
答案：C
A. Please stand near the moving surfaces.
B. Never stay near the removed surfaces.
C. Do not stay near the moving surfaces.
A. The delivery of the aircraft is required to ensure its airworthiness, therefore it is subject to customer inspection procedures.
B. The airplanes are airworthy because they were delivered in accordance with advised inspection procedures.
C. The airplanes are delivered with mandatory inspection procedures to ensure their airworthiness.
A. 简体技术英语（STE）有一个可操纵的通用手册（第2部分），为您提供了在技术员写作中最常用的单词。
B. 简化技术英语(STE)有一个受控的通用词典(第2部分)，它提供了在技术文件中最常用的词汇。
C. 简体技术英语（STE）有一个操纵专用词典（第2部分），为您提供了在技术操纵写作中最常用的单词。
A. The flight deck is located between the pressure dome and the front passenger door, and it is above the floor.
B. Cockpit is on the floor panel and between the pressure dome and the rear passenger partition.
C. Flight compartment is above the floor and between the forward passenger partition and the forward pressure dome.
A. 做好排查工作，找到腐蚀原因。
B. 采用这种检修方法可以发现变形的原因。
C. 执行排故程序，以找出故障原因。
A. Be careful not to get acid on your skin.
B. Prohibit not to get acid on your skin.
C. Be careful not to get alcohol on your skin.
A. That portion of the system is used to indicate the quantity, temperature and pressure of the oil.
B. That portion of the system is used to indicate the quality, temperature and pressure of the oil.
C. That portion of the system is used to indicate the quantity, temperature and pressure of the fuel.
A. Use special crank to rotate shaft of reel assembly clockwise to unwind the harness assembly from the spool.
B. Use special handle to turn the roller of spool assembly clockwise to wind the harness assembly from the reel.
C. Use special crank to rotate the spool of reel assembly clockwise to unfold the harness assembly from the shaft.
A. Make sure that the warranty life of the material is not expanded.
B. Make sure that the retirement period of the material is not exceeded.
C. Make sure that the shelf life of the material is not expired.
A. 这些单位和组件收集、监管、并向乘客和空乘人员输送氧气。
B. 这些组件和部件用于储存、调节并向乘客和机组人员输送氧气。
C. 这些单位和组件储存、管制、并向乘客和地面机组输送氧气。
