A、 Make sure that the mark on the bolt is aligned with the mark on the handle.
B、 Make sure that the mark on the bolt is level with the mark on the handle.
C、 Make sure that the mark on the bolt is parallel to the mark on the handle.
答案：B
A、 Make sure that the mark on the bolt is aligned with the mark on the handle.
B、 Make sure that the mark on the bolt is level with the mark on the handle.
C、 Make sure that the mark on the bolt is parallel to the mark on the handle.
答案：B
A. The positive pressure relief valves are fail safe devices. If the aft outflow valve cann’t be closed, these positive pressure relief valves bleed fuselage pressure overboard.
B. The positive pressure relief valves are fail safe devices. If the positive pressure relief valves fails closed, these aft outflow valve bleed fuselage pressure overboard.
C. The positive pressure relief valves are fail safe devices. If the aft outflow valve fails closed, these positive pressure relief valves bleed fuselage pressure overboard.
A. 系统通过安排相互关联的部件来实现一定的功能。
B. 系统是为执行某一特定功能而安排的相互关联的部件的组合。
C. 系统是将一系列部件安排在一起，为了完成某一特定功能。
A. 基本的控制与操作资料描述了飞机各部件和系统的控制和操作的情况，包括所使用的专用程序和限制规定。
B. 基本的控制与运营资料描述了飞机各部门和系统是怎样控制和运营的，包括所申请的专用程序和限制规定。
C. 基本的控制与操作资料描述了飞机各部件和系统是怎样控制和操作的，包括适用的专用程序和限制规定。
A. Be careful not to get acid on your skin.
B. Do not get acid on your skin.
C. You must be careful to get acid on your skin.
A. 气缸盖、排气（涡轮进口）温度等能通过发动机温度系统显示。
B. 发动机温度系统包括气缸盖、排气（涡轮进口）等，用于显示发动机温度。
C. 发动机温度系统用于指示发动机不同位置的温度，包括气缸盖温度、排气（涡轮进口）温度等。
A. Retesting and reviewing test results are optional due to discrepancies in the fuel/water sample and the ability of the detection kits to continuously measure the level of microbial growth.
B. It is very important to do the test again and confirm test results because of differences in the fuel/water sample and the ability of the detection kits to continuously measure the level of microbial growth.
C. It is mandatory to retest and evaluate test results to make sure the differences in the fuel/water sample and the ability of the detection kits to witness the level of microbial growth.
A. It sets forth supplier recommended and FAA required retirement (removal from service) times for parts or assemblies (using hours, intervals or other appropriate determinant) and life limited parts or assemblies.
B. It sets forth manufacturer recommended retirement times for parts or assemblies (using hours, cycles or another appropriate determinant) and FAA required retirement (removal from service) times for life limited parts or assemblies.
C. It sets forth retirement times for parts or assemblies (using hours, loops or another appropriate determinant) established by the manufacturer and retirement (removal from service) times for life limited parts or assemblies required by FAA.
A. If as many as 50% of the holes are contaminated, you should clean the display units behinds the holes.
B. The holes on the bottom of the display unit should be cleaned once over 50% of them are clogged due to contamination.
C. If contamination causes a blockage of more than 50 percent of the holes, then clean the holes on the rear of the display units.
A. 安全说明告诉读者，程序或程序中的步骤可能存在危险或造成损伤。
B. 安全说明告诉读者，程序中的程序或步骤可能是危险的或造成损伤。
C. 安全说明告诉读者哪些程序或步骤是危险的，或是可以造成损伤的。
A. Different meanings occur when words are combined in different ways.
B. When words can link up in different ways, ambiguity occurs.
C. Misunderstanding happens when words are contained in different modes.
