A、 Make sure that the bolt heads are attached to the skin.
B、 Make sure that the screw heads are connected with the metal.
C、 Make sure that the fastener heads are flush with the skin.
答案：C
A、 Make sure that the bolt heads are attached to the skin.
B、 Make sure that the screw heads are connected with the metal.
C、 Make sure that the fastener heads are flush with the skin.
答案：C
A. 所有的流量控制组件，如检查活门、燃油泵、油滤，应该包含在内。
B. 所有的流量控制装置应该包含在内，如单向活门、燃油泵、蓄压器。
C. 所有的流量控制装置应该包含在内，如检查活门、燃油泵、蓄压器。
A. 不要改变路线的管道。
B. 不要改变管道的长度。
C. 不要改变管道的走向。
A. 当用一个词代替另一个词不够充分时，使用另一种结构来书写句子。
B. 使用词对词的更换同时更换句式。
C. 不但要更换单词还要使用另一种结构。
A. 对于增压飞机和涡轮增压或涡轮螺旋桨飞机，应规定最大高度限制
B. 增压飞机、涡轮增压飞机或涡轮螺旋桨动力飞机，对于最高飞行高度有陈述。
C. 对于涡轮增压或涡轮螺旋桨飞机，可以提供最大高度限制。
A. All aircraft engines must meet certain general efficiency, economy, and reliability requirements, which require that the ignition system can provide ignition pulses at the proper time to the spark plug in various weather and other adverse conditions.
B. All aircraft engines must meet certain overall efficiency, economy and reliability requirements, which require the ignition system should provide ignition pulses at appropriate times under meteorological and other unfavorable conditions.
C. All aircraft engines must meet certain general requirements of reliability, economic and efficiency, which dictates the use of ignition systems that deliver the firing impulse to the spark plugs in all kinds of weather and under other adverse conditions.
A. 对备用排气风扇插钉进行完整性检查。
B. 对备用进气风扇插头进行连续性检查。
C. 对备用排气风扇插座进行连续性检查。
A. Warnings, cautions and notes may be used to highlight or emphasize important points.
B. Highlight or underline the key points with alerts, attentions and comments.
C. Alerts, cautions and comments can be used to protrude or underline the key points.
A. 结果是，孔的直径达到了允许的最大值。
B. 结果是，允许孔的尺寸超出最大范围。
C. 结果是，孔的尺寸大于允许的最大尺寸。
A. 齿轮箱是一个包含齿轮系和轴的箱体。
B. 齿轮箱包含了齿轮火车和曲轴。
C. 有一类齿轮箱包含了齿轮组和轴。
A. 如果你认为会下雪，请确保容器置于适当的温度条件中。
B. 如果你认为会下雪，请确保车辆处于合适的配置。
C. 如果你认为会下雪，请确保车速处于合适的范围之内。
