279、 He removed the access panel to see the corroded tube.

A. 　如果你发现了凹坑,做适用的维护程序

B. 　如果你发现了划痕,做具体的修理工作

C. 　如果你发现了裂痕,做适用的修理程序

A. 　 Dust can contaminate all areas.

B. 　 Dusts are contamination of all filters.

C. 　 Dust Can cause contamination on all filters.

A. 　为飞机延长停场周期做准备

B. 　为飞机长时间停用做准备

C. 　准备好飞机做保留故障处理

A. 　 Section 1 of the Pilot's Operating Handbook shall introduce basic data and information of general interest
to the pilot. The data and information is useful in loading, sheltering, handling, and routine preflight checking
of the airplane.

B. 　 Section 1 of the Pilot's Operating Handbook shall present basic data and information of general interest
to the pilot. The general interest is useful in loading, sheltering, handling, and routine preflight checking of
the airplane.

C. 　 Section 1 of the Pilot's Operating Handbook shall present basic data and information of general interest to
the pilot. The pilot is useful in loading, sheltering, handling, and routine preflight checking of the airplane.

A. 　每本手册应包含有一份章节清单

C. 　每本手册都标明章节或其中各部分

A. 　确保能用耳机听到飞行语音记录。

B. 　 确保能通过耳机与客舱进行对话。

C. 　确保能在耳机里听到驾驶舱的对话。

A. 　 Maintenance information does not necessarily include general procedural instructions but the application
of protective treatments after inspection.

B. 　 The maintenance information contains the general procedural instructions and the protective handling
measures after inspection.

C. 　 The general procedural description in the maintenance information includes the protective treatment
measures after inspection.

A. 　 The operator reassembled the linkage.

B. 　 The operator adjusted the cable.

C. 　 The operator adjusted the linkage.

A. 　When wheel is dried, clean with the compressed air.

B. 　 When wheel is cleaned, dry with the compressed air.

C. 　 When wheel is cleaned, dry with the impressed air.

A. 　快速定点必须与航迹的点吻合。

C. 　紧固件必须和滑轨内的孔对准。