2891. 此工作必须依据维护手册中的说明执行。

A. 为了便于阅读和交叉索引,图解说明、图形和表格实际上应以垂直布局呈现。

B. 为了便于阅读和相互参考,插图、图形和表格如果可行的话,应以垂直布局呈现。

C. 为了便于阅读和相互对照,示意图、插图和表格在实际情况下应以垂直布局呈现。

A. Our earth is in danger because of serious pollution. We must prevent chemicals from polluting our earth.

B. Our earth is in danger because of serious pollution. We must keep chemicals to polluting our earth.

C. Our earth is in danger because of serious pollution. We must ask chemicals for polluting our earth.

A. Install the point tags on the negative overheat thermocouple of the turbine.

B. install the terminal tags on the forward overheat thermocouple of the turbine

C. Install the port tags on the rearward overheat thermocouple of the turbine.

A. 安装指示器时将其向后方倾斜。

B. 为了安装指示器,应将其向后移动。

C. 安装指示器时将其向前移动。

A. 若为松散页,则每一页应注明修改日期和生效日期,或以其他方式表明修订方式。

B. 若为活页,则每一页应注明修改日期和生效日期,或以其他方式表明修订方式。

C. 若为固定页,则每一页应注明修改日期和生效日期,或以其他方式表明修订方式。

A. 计算在巡航功率下飞行45分钟所消耗的油量。

B. 以巡航功率飞行45分钟后计算航班的储备油量

C. 航班所需的储备燃油量应为巡航功率下45分钟所使用的燃油量。

A. 调整加速度计的精度。

B. 准确调整陀螺仪。

C. 调整罗盘的精度。

A. 供给系统有这些用处。

B. 分散系统有这些功能。

C. 分配系统有这些功能。

A. This section tells how to identify a fault by checking flight instruments.

B. This section tells parameters on flight instruments.

C. This section tells how to find a failure of flight instruments.

A. Those electrical units and components which generate, control and supply AC and/or DC electrical power for other systems, including generators and relays, inverters, batteries, etc., through the secondary busses.

B. Those electrical moudle and components which produce, control and supply AC and/or DC electrical power for other systems, including generators and relays, inverters, batteries, etc., through the secondary busses.

C. Those electrical units and components which generate, control and supply AC and /or DC electrical power for other systems, including generators and solenoid, inverters, cell, etc., through the secondary busses.