A、 Obey the safety precautions when you do work with high voltages.
B、 When working with high resistances, you should follow the safety precautions.
C、 The safety precautions are optional in an environment with high voltages.
答案：A
A、 Obey the safety precautions when you do work with high voltages.
B、 When working with high resistances, you should follow the safety precautions.
C、 The safety precautions are optional in an environment with high voltages.
答案：A
A. Information on specific optional systems or equipment may be included in this section or in Section 9, Supplementary.
B. Information about noncompulsory systems or equipment may be included in this section or in Section 9, Supplements.
C. Information on specific optional systems or equipment may be included in this Section or in Section 9, Supplements.
A. 计量塞增加燃油量。
B. 计量塞改变滑油流量。
C. 计量塞减少燃油流量。
A. Some aircraft parts are combined materials.
B. Some airplane structures are composite materials.
C. Some aircraft structures are compound materials.
A. 系统流程图应以带有图案的阴影图标表示，并尽少使流程转弯。示意图要包括发动机、油箱、水箱等并以它们为示意图的起始。
B. 系统流程图应以有图案的阴影为背景，并且尽量少用折线。示意图应包括发电机、燃油箱和液压油箱，它们应作为所示流程的起点。
C. 系统流程图应以阴影图形为图标底色，并且尽少使用连线。示意图以发电机、油箱和储压罐作为流程的端点。
A. Wrap two tapes around the pipe connectors.
B. Wrap the pipe joints with tape twice.
C. Wind two layers of tape around the pipe joints.
A. If an engine overheat/fire detector can not operate, the engine and APU fire alarm unit alternatively changes to single loop operation. In the single loop module, only one loop must check the engine and APU fire detection module for an overheat or fire co
B. If an engine overheat/fire detector fails to operate, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition for the engine and APU fire det
C. If an engine overheat/fire detector is inoperative, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition by the engine and APU fire detect
A. Keep all the parts that are serviceable and discard those that are broken.
B. Retain the parts that are functional and discard those that are of poor condition.
C. Keep all the parts that are operational and drop those that are contaminated.
A. 确保螺钉稳固。
B. 确保螺母拧紧。
C. 确保螺栓牢固。
A. 如果没有必需的修理程序，仔细检查燃油渗漏来确保不会渗漏更多。
B. 没有必须的维修程序。检查燃油使用频率确保使用量不会变大。
C. 无需执行修理程序。经常检查燃油渗漏情况，确认区域没有扩大。
A. Use a filter to remove unwanted material from the oil.
B. Use a valve to remove unwanted material from the gas.
C. Use a filter to remove unwanted material from the fluid.
