321、Tighten the bolts manually if you cannot do it with the specified tool. 如果不能使用指定的工具手动紧固螺栓。

Tighten the bolts manually until you can do it with the specified tool.

Tighten the bolts manually if it is not feasible to doit with the specified tool.

In case that you cannot do it with the specified tool in case, tighten the bolts manually.

正确答案：B

1168、Before you do servicing of the hydraulic system,isolate it.

1167、 For general aviation aircraft this material may be covered in Sys/Chap.20.

1166、找出损伤类型和尺寸。

1165、确保近地警告系统可以工作

1164、Manufacturers may omit systems not applicable to their product.

1163、To bleed the braking system operate the hand pump handle through its full travel.

1162、The definitions used in a particulars Handbook should be appropriate for that particular airplane or installation.

1161、如果电缆扭曲,断开两个电插头。

1160、On the ground it provides a fixed relationship between the side stick controller angle and the elevator deflections:

1159、Engine driven pumps are primary pumps which run continuously when they are turned on.