177.The user of the schematic diagram is the mechanic.

A. Removal of the cover is necessary.

B. It is necessary to install the cover.

C. It is a must to remove the cover.

A. 检查部件的接合处及邻近区域。

B. 检查部件的表面以及相关区域。

C. 检查部件的内部以及相邻区域。

A. If the filters become clogged after an unusually short time,send them to the laboratory for analysis of the contamination.

B. When the filters become clogged in an abnormal short time,send them to the library to analyze the contamination.

C. When the filters become blocked unconventionally after a very short time ,send them to the lab for calculation of the contamination.

A. 每个电干扰盘的后部都有一个灵活的汇流条组件。

B. 每个电干扰盘的后部都有一个固定的汇流条组件。

C. 每个配电盘的后部都有一个固定的汇流条组件。

A. 在初始蒙皮的初始紧固件位置,安装埋头铆钉。

B. 在初始蒙皮的初始紧固件位置,制作埋头垫圈。

C. 使埋头垫圈适用于初始蒙皮上的初始紧固件。

A. 螺旋桨的拉力与它的常规方向相反,造成了制动效果。

B. 螺旋桨的旋转朝向相反方向,导致完全停车。

C. 螺旋桨的推力指向与飞行方向相反,产生制动作用。

A. 为使接头移除更容易,根据手册转动外壳一圈,然后再转一圈。

B. 为了更容易地放置插销取出器,将容器人工地对准一个方向,然后再调整到其他方向。

C. 为了易于拆卸销钉,手动将罩盖先朝一个方向转动,然后再朝另一个方向转动。

A. Use only the approved forms of verbs and adjectives.

B. Use only the permitted forms of verbs and adverbs.

C. Use only the applicable forms of adverbs and adjectives.

A. Hand tools can be divided to four basic categories: kicking tools,holding tools,cutting tools,bending tools.

B. Hand tools can be divided to four basic categories:kicking tools,clutching tools,cutting tools,rolling tools.

C. Hand tools will fall into four basic categories: pounding tools,holding tools, cutting toolsand turning tools.

D. C.Hand tools will fall into four basic categories: pounding tools,holding tools, cutting toolsand turning tools.

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.