A、 表1中列出的研磨剂是备选的，你可以选择使用。
B、 表1给出了可以使用的替代粘合剂。
C、 你只能使用表1中列出的等效粘合剂。
答案：B
A、 表1中列出的研磨剂是备选的，你可以选择使用。
B、 表1给出了可以使用的替代粘合剂。
C、 你只能使用表1中列出的等效粘合剂。
答案：B
A. 如果剪切销遭受撞击，要测试牵引杆。
B. 如果定位销断裂，要检查两根杆。
C. 如果剪切销断裂，要检查牵引杆。
A. 分步执行这两个步骤。
B. 依次执行这两个程序。
C. 同时做这两个步骤。
A. The gears will automatically engage if a malfunction occurs.
B. If there is proper functioning, the gears will automatically engage.
C. If there is a malfunction, the gears will automatically disengage.
A. NOTE: This tryout is to make sure that the flap position indicating system is in a zero energy state.
B. NOTE: This test is to make sure that the flap position indicating system is in a zero condition.
C. CAUTION: This test is to make sure that the flap position indicating system is in a zero condition.
A. This section of the Pilot＇s Operating Handbook shall contain only those limitations required by regulation or necessary for safe operation of the airplane and approved by the regulatory authority.
B. This section of the Pilot＇s Operating Handbook shall include only those restrictions required by the regulations and those restrictions issued by the regulatory authority to ensure the safe operation of the airplane.
C. This section of the Pilot＇s Operating Handbook shall contain the regulatory requirements approved by the authorities and publish the necessary restrictions only for the safe operation of the airplane.
A. 飞机或其系统的缺陷经常被第三方给出文字描述。
B. 总的来说，对飞机或系统的排故不受第三方的限制。
C. 一般来说，在描述飞机或其系统时，应该使用第三人称。
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. Make sure that the oil in the hydraulic tank is above the minimum lever.
B. Make sure that the fluid in the hydraulic reservoir is above the minimum level.
C. Make sure that the fluid in the fuel reservoir is below the maximum level.
A. If the two indications do not agree, do the test again.
B. If there is a conflict between the two indications, repeat the test.
C. If the two indicators show any conflict, repeat the test.
A. 当有几个英语单词表达的是同一事物时（同义词）， STE 允许从这些同义词中选择一个使用除非另有规定。
B. 当同一词在英语中有多个词义（多义词)时，STE允许使用其中一个意义而不允许使用其他意义。
C. 当英语中有几个词表示同一事物(同义词)时，STE允许使用这些同义词中的一个，而不允许使用其他的。
