181、Attach the two ends of the hoses

A. 　 This is the maximum portion of flammable vapors in air If the portion is bigger, when an ignition source
touched the gas, it would cause the fire to be diffused.

B. 　 This is the minimum volume of flammable vapors. lf the volume is lower, when the gas contacted with an
ignition source, the fire would not come out.

C. 　 This is the minimum density of flammable vapors in air. if the density was lower, when an ignition 'source
touched the gas, it would not cause the spread of flame.

A. 　封面标题和适当的飞机内容应首先在手册的封面或书脊(或两者)上表现出来。

B. 　封面标题和适用的飞机设计应在手册的封面或书脊(或两者)上永久显示。

C. 　封面标题和适用的飞机名称应突出显示在手册的封面或书脊(或两者)上。

A. 　 Solenoid valves shall be shown with a notation. The notation indicates the spring is loaded by the valve to
the open or closed position

B. 　 Solenoid valves shall be shown with a symbol. The valve indicates whether the valve is spring-loaded to
the open or closed position.

C. 　 Solenoid valves shall be shown with a mark. The mark indicates whether the valve is spring-loaded to the
open or closed position

A. 　请勿将工具和碎片置于发动机附近。

B. 　 把除工具外的其它物品(例如碎片)从发动机附近清除

C. 　把工具和发动机上的碎片移除。

A. 　 You can lead to ambiguous, if you use an imperative mood other than more sophisticated sentence type.

B. 　 lf you use a more complex sentence structure instead of an imperative, you can create vagueness.

A. 　将 P5-5 板上的备用电源电门设置到关位。

B. 　将备用电源开关安装到 P5-5 板上并设置到关位。

C. 　将 P5-5 板上的气动电源电门设置到关位。

A. 　请勿将工具和碎片置于发动机附近。

B. 　 把除工具外的其它物品(例如碎片)从发动机附近清除

C. 　把工具和发动机上的碎片移除。

A. 　 Complicated sentence configurations and a lot of meanings and synonymity that many English words
have can make confusion.

B. 　 Complex sentence structure and a great deal of meanings and antonyms that many English words have
can cause misunderstanding

C. 　 Intricate sentence structure and lots of meanings and synonyms that many English words have can likely
cause confusedness.

A. 　 Use only the approved forms of verbs and adjectives

B. 　 Use only the permitted forms of verbs and adverbs.

C. 　 Use only the applicable forms of adverbs and adjectives.

A. 　 This Specification shall be expected to prepare a continuous airworthiness program other than the FAA
airworthiness organization.

B. 　
airworthiness agencies but FAA it、 nay replace the appropriate agency and its regulations.

C. 　 This Specification could be used to prepare a continuous airworthiness program approved by other
airworthiness agencies, but it must be approved by FAA airworthiness agencies