38.Adjust the potentiometer until you do not hear a hum from the loudspeaker.

A. 　程序应在每章中按参考号顺序编制,并带有相应的首要和主要主题头,并需从新页面顶部开始每个程序。

B. 　程序应在每章中按参考号顺序编制,并带有相应的次要和主要主题头,而无需从新章节顶部开始每个程序。

C. 　程序应在每章中按参考号顺序编制,并带有相应的主要和次要主题头,而无需从新页面顶部开始每个程序。

A. 　Send the results of the audit to the quality department.

B. 　Tell the quality department about the results of the analysis.

C. 　Let the quality department know the results of audit.

A. 　Small quantities of blooming,do not cause damage to the component,on surface can appear on objects in storage.

B. 　Those items in storage can be damaged by small quantities of blooming on surface.

C. 　Small quantities of surface blooming can be found on stored items and do not cause damage to the component.

A. 　数。 据库的同步正在进行中

B. 　数据商的加载正在进行中。

C. 　数据库的更新正在同步中。

A. 　All flow control devices within the system,such as check valves,fuel pumps,accumulators,and relays should be included.

B. 　All flue control devices within the system,such as single valves,fuel pumps,storage,and relays should be contained.

C. 　All fluid control devices within the system,such as single valves,fuel pumps,accumulators,and relays should be involved.

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. 　发动机及其附件所用的润滑油是一样的。

B. 　润滑发动机和辅助设备的方式是相同的。

C. 　发动机的润滑和辅助设备是相同的。

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 document provides optional information to the befitting airplane maintenance manual(s).

B. 　This document provides supplemental information to the applicable airplane maintenance manual(s).

C. 　This document provides extra information to the accessible airplane maintenance manual(s)

A. 　拆卸/安装:拆卸/安装部分应清楚说明拆卸和安装部件或组件所需的步骤顺序,以及遵循的预防事项。

B. 　拆卸/安装:拆卸/安装部分应清楚说明拆卸和重新安装部件或组件所需的步骤顺序,以及遵循的预防事项。

C. 　拆卸/安装:拆卸/安装部分应清楚说明拆卸和重新安装部件或组件以及遵循的预防事项所需的步骤顺序。