"EMERGENCY EXIT" placard at exit hatch over Left wing is illegible.

A. If there is hum from the loudspeaker, don＇t adjust the potentiometer.

B. Adjust the potentiometer unless hear a hum from the loudspeaker .

C. Adjust the potentiometer until the loudspeaker no longer hums.

A. Hydraulic fluid has no effect on painted surfaces.

B. Hydraulic fluid has positive influence on painted surfaces.

C. Hydraulic fluid has passive influence on painted surfaces.

A. Make sure that there is something in the pipe.

B. Make sure that there is nothing in the pipe.

C. Make sure that blockage is in the pipe.

A. Inspect the drain holes for obstruction.

B. Check for the drain holes for abrasion.

C. Check the drain holes for leakage.

A. If the clearance dimension is not accurate, adjust the clearance dimension between the extend proximity sensor [44A] and the target [45]. Some of the ducts in the air distribution system are wrapped with insulation material.

B. Adjust the clearance dimension between the extend proximity sensor [44A] and the target [45] in case of the clearance dimension is out of tolerance. Some of the ducts in the air distribution system are wrapped with non-conductive material .

C. Adjust the clearance dimension between the extend proximity sensor [44A] and the target [45] until the clearance dimension is out of range. Some of the ducts in the air distribution system are wrapped with compound material.

A. Apply two kindreds of protective compound to shield the sealant from any harm caused by hydraulic fluid.

B. In order to prevent damage to the sealant from hydraulic fluid, it is necessary to apply two layers of protective compound.

C. To prevent hydraulic fluid from drowning the sealant, it is recommended to apply two layers of protective compound.

A. Even though this specification is conformed to recognized industry practices , it is prepared in broad genuine terms and it is recognized that problems will occur which are not handled enough by the specification.

B. Although this specification coheres with recognized industry practices , it is written in vast general terms and it is asserted that problems will appear which are not treated sufficiently by the specification.

C. Though this specification complies with accepted industry practice, it is compiled in wide generic terms and it is recognized that problems which are not treated adequately by the specification will arise.

A. Do not perform any work to the aircraft during maintenance.

B. It is forbidden to refuel the aircraft during maintenance.

C. You can add fuel to the aircraft at any time.

A. It is forbidden to go into the engine test area with approval.

B. Entering the engine test area must not be approved.

C. Approval is a must when entering the engine test area.

A. For purposes of this specification, "aircraft" means the relevant optional parts of the airframe and parts specified in the type certificate or supplied by the aircraft manufacturer

B. For the intention of this specification, " airplane" is know as the airframe selective components set forth in the Type Certificate or provided by the airplane producer.

C. For purposes of this specification, "aircraft" means the airframe and parts specified in the Type Certificate or the related optional parts supplied by the aircraft manufacturer.