A、 A mixture of fuel and oxygen can cause an explosion.
B、 A mixture of fuel and nitrogen can cause an burn.
C、 A mixture of gas and oxygen should cause an explosion.
答案：A
A、 A mixture of fuel and oxygen can cause an explosion.
B、 A mixture of fuel and nitrogen can cause an burn.
C、 A mixture of gas and oxygen should cause an explosion.
答案：A
A. Recommending or requiring life limited components is on the right side of the page in an appropriate margin.
B. Recommended or required retirement time of life limited parts is on the right side of the page in an appropriate space.
C. The required retirement time of life limited components is located on the right side of an appropriate space.
A. Turn the canopy manually clockwise to make the pin removal process easier.
B. To make pin removal easier, manually turn the canopy in one direction and then in the other.
C. Rotate the canopy in one direction and then in the other to hinder the removal of the pin.
A. Crucial angle of attack is the angle at which a stream or air flow begins to split from a surface,causing a decrease in efficiency. It is important for designing dynamic surfaces ,such as airplane wings,turbine blades,as it determines the maximum attack angle that can be achieved without causing loss of lift or thrust.
B. Crutial angle of attack is the angle at which a stream or air flow begins to seperate from a surface,causing a decrease in efficiency. It is important for designing aerodynamic surfaces ,such as airplane airfoils,turbine blades,as it determines the maximum attack angle that can be achieved without causing loss of lift or thrust.
C. Critical angle of attack is the angle at which a fluid or air flow begins to separate from a surface, causing a reduction in the efficiency of the flow. The critical attack angle is an important consideration in the design of aerodynamic surfaces, such as airplane wings, turbine blades, as it determines the maximum angle of attack that can be achieved without causing a loss of lift or propulsion.
A. 用黑色字体在页面外侧对改版、补充和删除进行说明，对应于已经更改的部分打印内容。
B. 应在书页外侧以垂直黑线标记修订、增加和删除之处，仅对应于印刷件中已更改的内容。
C. 对于经过修订和增删的文字，沿书页外侧用粗黑直线加以标识，并仅打印修改内容部分。
A. In the turbofan engine maintenance handbook this chapter would include such subjects as removal, cleaning, inspection, disassembly, testing , etc.
B. In the turbofan engine repair manual this section would include such topics as disassembly, cleaning, checking, accessory, adjusting , etc.
C. In the turbofan engine overhaul manual this section would include such subjects as teardown, cleaning, inspection, assembly, testing , etc.
A. 紧急出口不用于日常进出，而用于紧急情况，包括结构件、闩锁机构、扶手、绝缘、内衬、操纵装置等物品。
B. 紧急出口是为方便疏散而设立的出口门，不用于日常进出，包括结构件、闩锁机构、扶手、绝缘材料、内衬、操纵装置等物品。
C. 应急出口通常不用作常规出口，包含诸如结构件、门闩、把手、隔热材料、衬板、控制器等。
A. Apparently, the Supplement about the subject system or equipment, if installed, must be in the Pilot＇s Operating Handbook whenever applicable.
B. You shall know clearly that when the subject system or equipment is installed, the Pilot＇s Operating Handbook must always contain the related Supplement.
C. When the subject system or equipment is installed, you need to clearly identify the associated Supplement in the Pilot＇s Operating Handbook at all times.
A. It is forbidden to go into the engine test area with approval.
B. Entering the engine test area must not be approved.
C. Approval is a must when entering the engine test area.
A. When some new kind of situation occurs, the operator should communicate openly with the manufacturer. The manufacturer should supply the operator solid assistance.
B. When the new situation gets worse, it should build the open communication between the operator and manufacturer. The operator claims the situation to get the feedback from the manufacturer.
C. When something new happens, open interconnection should exist between the manufacturer and the operator. The operator should report to the manufacturer to obtain effective discount.
A. 在设计的概要图里，可能需要在让图表内容详实和便于阅读理解的简单之间妥协。
B. 在设计原理图时，可能有必要在使图不言自明所需要的细节和易于阅读和理解所必需的简单之间作出折衷。
C. 在设计插图的过程，涵盖细节来让图表自行展示且方便阅读和理解是有必要的。
