A、 Sentence forms shall be simple and direct ,omitting discussions of theory except where essential for practical understanding and application.
B、 The sentence form should be easy and direct, avoiding discussion of theory except when practical understanding and application are necessary.
C、 The form of a sentence should be simple and direct, and the discussion of theory should be omitted in addition to practical understanding and application.
答案：A
A、 Sentence forms shall be simple and direct ,omitting discussions of theory except where essential for practical understanding and application.
B、 The sentence form should be easy and direct, avoiding discussion of theory except when practical understanding and application are necessary.
C、 The form of a sentence should be simple and direct, and the discussion of theory should be omitted in addition to practical understanding and application.
答案：A
A. During engine run, the number 1 engine oil pressure watch swings.
B. During engine run, the number 1 engine oil pressure gauge fluctuates.
C. During engine run, the number 1 engine oil pressure indication moves.
A. A servo system is a device that has the ability to carry out an order and give a response to fufill five basic requirements.
B. A servo system is a device that has the ability to carry out an order and give a response to orders. It can finish five basic requirements.
C. A servo system is a device that has the ability to respond to and carry out an order which must be able to fufill five basic requirements.
A. Retesting and reviewing test results are optional due to discrepancies in the fuel/water sample and the ability of the detection kits to continuously measure the level of microbial growth.
B. It is very important to do the test again and confirm test results because of differences in the fuel/water sample and the ability of the detection kits to continuously measure the level of microbial growth.
C. It is mandatory to retest and evaluate test results to make sure the differences in the fuel/water sample and the ability of the detection kits to witness the level of microbial growth.
A. 温度降低，钢索的拉力会减小。
B. 钢索上的张力会随着温度升高而增加。
C. 温度升高，钢索张力会减小。
A. 灯泡带来了一盏灯。
B. 这灯发出微弱的光。
C. 这灯发出了亮光。
A. 裂缝的最大长度为5英尺。
B. 裂缝的最大长度为5英寸。
C. 裂缝的最大深度为5英寸。
A. 26章题目是防火系统，写的是固定和便携式的用来探测和指示飞机内的火焰或烟雾，存储和向所有受保护区域分配灭火剂的装置和部件。如果灭火瓶、活门、管子等属于制造商指定的标准设备，则它们也包含在这章中。
B. 26章题目是防火系统，写的是固定和便携式的的装置和部件，用来探测和指示飞机内的火焰或烟雾，存储和分配灭火剂到所有受保护区域，如灭火瓶、活门、管子等，如果其属于制造商指定的标准设备。
C. 26章题目是防火系统，写的是固定和便携式的用来探测和指示飞机内的火焰或烟雾，存储和向所有受保护区域喷洒灭火剂的装置和部件。如果灭火瓶、活门、管子等属于制造商设计的标准设备，则它们也包含在这章中。
A. Total number of rules is decreased from 65 to 53.
B. Total number of rules ascended from 65 to 53.
C. Total number of rules increased from 65 to 53.
A. It changed the volts in the transmitter
B. It changes the electrical currents in the transmitter.
C. It changed the electronic currents in the reciever.
A. 从主快速断开装置到发动机的系统部分，能够将燃油分配到发动机燃烧室和加力燃烧室。该部分包括管路、泵、温度调节器、阀门、油滤、总管、喷嘴等。不包括主燃烧室或加力燃烧室控制装置。
B. 从主快速断开装置到发动机的系统部分，将燃料分配到发动机燃烧器部分和推力增强器，包括泵、温度调节器、阀门、过滤器、歧管、喷嘴等。不包括推力增强器燃料控制。
C. 从主快速断开装置到发动机的系统部分，将燃料分配到发动机燃烧器部分和推力增强器，包括泵、泵、温度调节器、阀门、过滤器、歧管、喷嘴等。包括主或推力增强器燃料控制。
