72.Remove all sealant that is around the hole.

A. A.Pressurize the system to 150 bar with the hydraulic pump.

B. B.Pressurize the system to 150 bar with the hand pump.

C. C.Pressuring the system to 150 bar with the hand pump.

A. 　You can use electric motors to drive fuel and hydraulic pumps or to drive a valve to the commanded position in the fuel,hydraulic or air conditioning system or to move doors and cargo containers.

B. 　Electric motor can drive fuel and hydraulic pumps or drive a valve to the commanded position in the fuel,hydraulic or air conditioning system or move mechanical parts like doors and cargo containers to produce mechanical power.

C. 　Electric motor produce mechanical power and their main functions are to drive fuel and hydraulic pumps,to drive a valve to the commanded position and to move mechanical parts like doors and cargo containers.

A. 　从油箱内排放大约2升燃油

B. 　从油箱内排放至少2升燃油。

C. 　从油箱内排放不超过2升燃油。

A. 　On conditional that the total chapter has been relocated,to include a relocated chapter table of contents is not important,then the subsystem relocations should then identified in the Table of Contents at the front of the book.

B. 　To include a relocated chapter table of contents is not required if the total chapter has been relocated,while the subsystem relocations should then identified in the Table of Contents at the front of the book.

C. 　If the total chapter has been relocated,it is not forced to contain a relocated chapter table of contents,and the subsystem relocations should then identified in the Table of Contents at the front of the book.

A. 　应另提供排故信息,说明可能的故障,如何识别这些故障的方法以及故障的纠正措施。

B. 　故障排除信息描述可能发生的故障,应另提供如何识别这些故障的方法,以及针对这此故障采取的合理措施。

C. 　故障排除信息描述可能发生的故障,应另提供如何识别这些故障的方法,以及针对这些故障釆取的有效措施。

A. 　再次启动发动机前,清除地面燃油。

B. 　再次启动发动机前,拆除燃油管。

C. 　启动发动机前,清楚地面杂物。

A. 　对于使用寿命长的飞机应进行检查以协助选择检查项目,大修时应进行拆卸。

B. 　为了大修而拆卸的及时飞机,应被检查以协助选择检查项目。

C. 　为了协助选择检查项目,应检查并拆卸使用寿命长的飞机进行大修。

A. 　This material replaces dangerous fumes when it touches hot surface.

B. 　This material releases dangerous fumes when it touches hot surface.

C. 　On contact with hot surfaces,this material produces acrid fumes.

A. 　调节/测试:调节测试说明应提供指示以完成测试或检査及确保系统、子系统或组件中装配组件的完整性。

B. 　调节/测试:调节测试说明应提供完成测试或可査的指示,以确保作为系统、子系统或组件装配的操作部件的完整性。

C. 　调节/测试:调节测试说明应提供指示完成测试或检查及确保作为系统、子系统或组件装配的操作部件的完整性。

A. 　除非有必要了解系统,否则不需要完整地显示回流管。

B. 　如果没有必要了解系统,则需要完整地显示回流管。

C. 　除非需要了解系统,则需要新分地显示回流管。