2070.This group of sealing compounds is also applicable in an emergency.

A. 当你选用一个词时,一定要确保你选择的变换时态不会改变句子的意思。

B. 当你替换一个词时,一定要确保你选择的非传统词汇不会改变句子的平均句长。

C. 当你替换一个词时,一定要确保你选择的替代词不会改变句子的意思。

A. Propellers must be overhauled in a satisfactory shop which should be supplied by the propeller manufacturer in accordance with data.

B. Overhaul of propellers and the shop must meet the data of the propeller manufacturer.

C. Overhaul of propellers must be accomplished in a qualified shop in accordance with data supplied by the propeller manufacturer.

A. Ensure that you do activate the control adjacent to it.

B. Adjust the adjacent control for optimal results.

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

A. 点火部分包括感应振荡器、磁电机、开关、主过滤器、分配器、线束、火花塞、点火继电器、激励器和提前点火的电气部分。

B. 点火部分包括感应振动器、磁电机、开关、铅过滤器、分配器、线束、插头、和火花提前的电气部分。

C. 点火部分包括感应振动器、开关、铅过滤器、分配器、线束、插头、点火继电器、激励器和火花提前的电气部分。

D. B.点火部分包括感应振动器、磁电机、开关、铅过滤器、分配器、线束、插头、和火花提前的电气部分。

E. C.点火部分包括感应振动器、开关、铅过滤器、分配器、线束、插头、点火继电器、激励

F. C.点火部分包括感应振动器、开关、铅过滤器、分配器、线束、插头、点火继电器、激励器和火花提前的电气部分。

A. 起飞滑跑距离所需的速度应高于相同构型下的无动力失速速度。

B. 确定地面拉起距离的速度应高于相同构型的发动机关断失速速度。

C. 确定地面滑跑距离的速度应该高于相同配置下的断电失速速度。

A. 如果你不能脱开杆的位置,新杆的长度很可能需要调节。

B. 如果你不能断开杆和活塞,可能量错了新杆的长度。

C. 如果你不能接合杆和活塞,新杆的长度可能是不正确的。

A. The troubleshooting section includes Description and Operations.

B. Contents of Troubleshooting section should be prepared under "Description" and "Operations".

C. Material of Description and Operation is the critical contents to troubleshooting section.

A. Decrease the pressure in the hydraulic system.

B. Bleed the speedbrake hydraulic system.

C. Disconnect the speedbrake hydraulic system.

A. 打磨两条线之间的孔洞区域。

B. 在两条线的交点上钻一个孔。

C. 通过孔洞排空两条管路。

A. The exit doors are mainly used for passenger boarding.

B. The exit doors are only used for evacuation.

C. The exit doors are not only used for the passengers to evacuate from the airplane but also used for normal exit.