将频率调整到表1中给出的值。

A. 凹坑没有伤及保护漆层。

B. 划痕没有穿透保护层。

C. 划痕没有贯穿保护膜。

A. 不论怎样的“危机”大多数总是会出现需要马上快速反应的故障，比如全动力故障，着火或烟雾，或者客舱的快速释压。

B. 可是一个“危急情况”几乎总伴随着故障，需要立即快速反馈，比如一个动力装置故障，着火或烟雾，或快速客舱减压。

C. 然而，“紧急情况”几乎总是涉及需要立即和快速响应的故障，如整个动力装置失效，火灾或烟雾，或座舱快速失压。

A. Manufacturers＇ recommended time limits, maintenance checks and inspections (both planned and unplanned) are arranged in Chapter 5.

B. Manufacturers＇ recommended time limits, maintenance checks and tests (both scheduled and unscheduled) are arranged in Chapter 5.

C. Manufacturers＇ recommended time limits, maintenance checks and inspections (both scheduled and unscheduled) are arranged in Chapter 5.

A. The data of the revision shall be shown on each printed page.

B. The date of the revision shall be shown on each revised page.

C. The time of the reserve shall be shown on each revised page.

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. The approved repair part must contain the skill and technology required to carry up the repair.

B. The approved repair portion shall include processes and techniques necessary for performing a repair .

C. The necessary workmanship and skills constitute the approval of the repair portion.

A. 对现有分析进行了审查，以确定可能表现出较低安全裕度的部件和区域。

B. 对现有分析进行复核，对部件和区域进行标识，以显示出较低安全裕度。

C. 对于安全裕度较低的部件和区域进行标识并进行了现场分析审查。

A. 机翼和发动机载荷取决于最大起飞重量和额定起飞马力以及机翼面积。

B. 机翼和电源负载取决于最大起飞重量和起飞马力评定值以及机翼面积。

C. 机翼和动力载荷决定了最大起飞重量和起飞马力评定值以及受力表面积。

A. Make sure that there is airflow in the pipe to hinder .

B. Make sure that there is something in the pipe to block the airflow.

C. Make sure that there is nothing in the pipe to hinder airflow.

A. Clear the pipes in order to remove corrosion.

B. Wash the pipes so as to remove dust.

C. Flush the pipes to remove contamination.