1419. 确信每个电门下方的琥珀色的VALVE CLOSED灯关闭。

A. At the discretion of the manufacturer, the manual may either be prepared in loose-leaf form with a durable cover or a permanently bound form

B. It is up to the manufacturer to decide whether the manuals presented as a durable loose-leaf or as an eternal binding.

C. The manufacturer is required to decide the format of the manual b e prepared in loose-leaf form and a permanently binding form.

A. The selection of data by manual producers which are included in this section shall be restrained by the concepts contained in the preface of this specification.

B. The selection of data by manual producers included in this section shall be governed by the concepts contained in the preamble to this specification.

C. In his selection. the producers choice of data should be bound by concepts contained in the preamble of this specification.

A. 用螺丝刀松动夹子。

B. 用扳手松动夹子。

C. 用螺丝刀拧紧夹子。

A. Composite structure combines high stength and rigidity with heavy weight.

B. Composite structure possesses the characteristic of high stength and rigidity.

C. Composite structure’s stength and rigidity are more than that of metal structure,at the same time, Composite structure has light weight.

A. 对裸露的金属区域进行临时保护。

B. 对铁质金属区域进行必要保护。

C. 对有色金属区域涂抹临时保护涂层。

A. INNER

B. OUTPUT

C. INPUT

A. The airplane general arrangement illustration should be shown in vertical sequence within one page;

B. The airplane general arrangement illustration was made of plan, bottom and front views;

C. The airplane general arrangement illustration shall be presented in a horizontal sequence;

A. 在快速齿轮上涂抹润滑脂。

B. 按照紧固件来申请润滑脂。

C. 给紧固件涂上油脂。

A. 来自压气机的空气与来自燃油喷嘴的燃油在燃烧室混合。

B. 从压气机出来的空气和燃油在燃烧室混合。

C. 从压气机出来的空气和从燃油喷嘴出来的燃油在燃烧室燃烧。

A. If you use folding page, the page number must be invisible when folding.

B. The page number must be viewing if you fold the page.

C. If folded pages are used, the page number must be visible when folded.