A、 Some chemicals can not be used if they are well kept.
B、 Some chemicals must be well kept so that they can be used.
C、 Some chemicals must be well kept as long as they can ben used.
答案：B
A、 Some chemicals can not be used if they are well kept.
B、 Some chemicals must be well kept so that they can be used.
C、 Some chemicals must be well kept as long as they can ben used.
答案：B
A. 所有三个螺栓孔必须与燃油管匹配。
B. 所有三个支架孔必须与燃油管对齐。
C. 所有三个支架孔必须与然油管齐平。
A. 在APU运转过程中,如出现滑油渗漏,检查滑油温度传感器。
B. 在APU运转过程中,检查滑油温度传感器的滑油渗漏程度。
C. 在APU运转过程中,检查滑油温度传感器有无滑油渗漏迹象。
A. The values doesn＇t have to be more than the approved differences.
B. The values must be less than the approved differences.
C. The values must not be less than the approved differences.
A. 建立单独的导线标识码,以组建追踪电路(如图5)
B. 建立单独的导线标识码,以协助追踪电路(如图5)
C. 建立单独的导线标识码,以装配追踪电路(如图5)
A. 符合本规范会使所有飞机类型的内容和格式高度标准化,因此本规范得到联邦航空管理局认可。
B. 联邦航空管理局认识到,本规范会使所有类型的飞机(手册)内容和格式高度标准化。
C. 联邦航空管理局认可,符合本规范会使所有类型的飞机(手册)内容和格式高度标准化。
A. Follow the working procedure.
B. Obey the working procedure.
C. Require the working procedure.
A. 燃油压力表从化油器上分接,用于功率指示。
B. 燃油压力表从碳封严上分接,用于功率指示。
C. 燃油压力表从碳封严上分接,用于电源指示。
A. Lubricate the engine and its accessories with the same brand.
B. Lubricants for the engine and the auxiliary equipment are the same.
C. The engine and the additional devices are greased in a same manner.
A. 在表面盖上一层塑料传输板。
B. 在表面放置塑料材料板。
C. 在表面覆盖一层透明的塑料膜。
A. 如果故障频繁出现,进行系统测试。
B. 如果故障定期出现,进行系统测试。
C. 如果故障随机出现,进行操作测试。
