781. Tighten the coaxial connectors (hand tight plus 1/8 turn)

A. 活门失效的首要原因是液压油泄露

B. 活门失效的主要原因是液压油泄露

C. 活门失效的主要原因是液压油污染

A. Make sure that the diameter of the hole is less than the specified value.

B. Make sure that the diameter of the hole is more than the specified value.

C. Make sure that the radius of the opening is less than the specified value.

A. Each tank has two float valve switches

B. Each main tank has two float switches

C. All the main tanks has two float valves

A. In order to revise, supplement an delete the printed maternal, a perpendicular black line must be use to identify the changed portion along the margin of the page

B. Whenever the printed matter is to be revised, replenished or updated mark a black cross on the right margin of the page opposite to the changed portion.

C. A vertical black line should be drawn to make any revision, addition and deletion along the outside of the page opposite to the changed ciontents.

A. Do this procedure again.

B. Repeat this procedure.

C. Do this procedure two times.

A. 主分配总管通过竖管和顶部分配管向客舱均衡地供应空气

B. 为了向客舱充分地供气,主分配总管通过竖管和顶部分配管供气

C. 主分配总管通过竖管和顶部分配管向客舱充分地供应空气

A. 密封组件发现缺陷

B. 密封胶发现缺陷

C. 封严发现缺失

A. 737NG翼展是112.58英尺。

B. 737NG翼尖小翼尺寸为112.58英尺。

C. 737NG停放时大翼间距至少为112.58英尺。

A. Attach the cable to the structurewith wire;

B. Make the wire and cable parallel to the structure;

C. Connect the wire of the cable to the structure;

A. Apply a small quantity of oil to the threads of the two bolts.

B. Lubricate the threads with a small quantity of oil.

C. Lubricate the two bolts with oil.