251. LET THE DIAL BECOME STABLE BEFORE YOU( ) THE INDICATIONS

A. 拧紧这些同轴接头(用手上紧再1/8转)

B. 拧紧这些同轴接头(用手上紧少1/8转)

C. 拧紧这些同线路接头(用手上紧少1/8转)

A. 在作动控制之前请不要连接锁定机构。

B. 在操作控制杆之前请断开锁销。

C. 在移动控制杆之前请解锁权。

A. This task contains guidance for the removal of the air pressure filter assembly.

B. This task is to repair the air pressure filter assembly.

C. This task lists tools and materials for the removal of the air pressure filter assembly.

A. 保留勤务部件,更换那些损坏的

B. 报废损坏的部件后,保留所有可用的。

C. 保留所有可用的部件,报废那些损坏的。

A. Operation time should be recorded if the pump is in emergency.

B. When you use the emergency pump, record the time of operation.

C. When the pump is for emergency use, record the time of usage.

A. The engine exhaust gas temperature system supplies the engine low pressure rotor (N1) and the engine high pressure rotor (N2) speed signals;

B. The engine rotating speed instrument system supplies the engine low pressure rotor (N1) and the engine high pressure rotor (N2) speed signals;

C. The engine rotor pressure system supplies the engine low pressure rotor (N1) and the engine high pressure rotor (N2) speed signals;

A. Find the source of the fuel leakage.

B. Find the beginning of the fuel leak.

C. Find the beginning of the fuel leakage.

A. The test can be canceled as long as 5 minutes is left after the text.

B. 5 minutes is a must unless you move on the test again.

C. An interval of 5 minutes is necessary before you continue the test.

A. 用于指示低压的压力计使用更灵活的管子,更容易展开和卷绕

B. 用于指示较低压力的仪表使用更易弯曲的管子,线圈更易散开和缠绕。

C. 用于指示较低压力的压力表使用的软管更加柔软,可以随时解开和盘绕。

A. Assure that you do not do the adjacent control

B. Make sure that you do not operate the adjacent control

C. Ensure that the adjacent control will be operated