49、You can stow life vests in the space under the seats.

A. 　 lf they fail, temporary damage can occur.

B. 　 lf they drop, permanent injury can occur.

C. 　 lf they fall, permanent damage can occur

A. 　这些安全措施是在维修区工作的最低要求

B. 　这些安全警告满足维修区工作的全部要求

C. 　这些安全提示有必要作为维修区工作要求

A. 　 This lssue 7 of the specification fully takes place all issues and revisions before.

B. 　 This lssue 7 of the specification fully covers all prior issues and revisions.

C. 　 This lssue 7 of the specification fully replaces all previous issues and revisions.

A. 　 If you find a crack, do the applicable repair procedure.

B. 　 If you find a crash, do the applicable maintenance procedure.

C. 　 If you find the wear, do the applicable repair procedure.

A. 　 Make sure that the coils of the oxygen hose do not rub together.

B. 　 lt is acceptable the coils of the chlorine hose rub together.

C. 　 Ensure that the coils of the nitrogen hose do not rub together.

A. 　为卫生间和厨房提供冷气。

B. 　为卫生间和厨房提供暖气。

C. 　为卫生间和厨房提供通风。

A. 　更换磨损超过最大限度的部件。

B. 　更换部件,磨损已超过最小限度。

C. 　拆卸元件,磨擦已超过最大限度。

A. 　需要作为安装或恢复作动程序中的十部分的任何调整/测试应在文本中按适当的顺字进行操作

B. 　需要作为安装或限动程序中的一部分的任何调整/测试应以适当的方式包含在文本中

C. 　需要作为安装或恢
复作动程序中的 e 部分的任何调整/测试应以适当的顺序包含在文本中

A. 　在.APU 运转过程中,如出现滑油渗漏,检查滑油温度传感器。

B. 　在 APU 运转过程中,检查滑油温度传感器的滑油渗漏程度。

C. 　在 APU 运转过程中,检查滑油温度传感器有无滑油渗漏迹象。

A. 　 The STE dictionary gives an approved alternative that has a different part of speech.

B. 　 The STE dictionary gives an approving alternative word has a different word class.

C. 　 The English dictionary gives an approved alternative word with a different part of speech.