821.如有必要,加一个垫圈。

A. 数据应以标准日(ISA)的时间、燃料和从海平面爬升的距离与海拔高度的关系来表示。

B. 数据应能够呈现标准日(ISA)的时间、燃料和从海平面爬升的距离与海拔高度的关系。

C. 数据应显示国际标准大气(ISA)条件下飞机从海平面爬升到某高度所需的时间、燃油消耗量和水平距离。

A. The dictionary includes some unapproved words that can be technical names if you can put them in the applicable technical name category.

B. Some approved words are included in the dictionary,they can be technical names if they belong to applicable technical name category.

C. The dictionary contains some unapproved words,which can be put in separate technical namecategory,they can be technical names.

D. C.The dictionary contains some unapproved words,which can be put in separate technical namecategory,they can be technical names.

A. The toxic conditions are given in Paragraph 2.0.

B. All the test result are given in Paragraph 2.0.

C. All the test conditions are given in Paragraph 2.0.

A. A motor can power all the systems.

B. One generator can power for all the systems.

C. One generator can supply power for all the systems.

A. 浸泡元件四个小时。

B. 冲洗元件四个小时。

C. 打磨元件四个小时。

A. Each wire is comprised by an alphabetical code following 2 alpha digits and 2 numerical digits.

B. Each wire is identified by an alphanumerical code comprising 2 alpha digits followed by 2 numerical digits.

C. Each wire consists of an alphanumerical code following 2 alpha digits and 2 numerical digits.

A. 贴标签于章节编号或标题。

B. 在标签上标注章节号或标题。

C. 标记所有标签以及章节编号或标题。

A. The system is pneumatically operated and mechanically controlled.

B. Hydraulic power drives the system,while electricity is connected.

C. The system is hydraulically operated and electrically controlled.

A. The routing of the cable loom may have been altered by the installation.

B. The routing of the cable loom may have been held by the installation.

C. The routing of the cable loom may have been defended by the installation.

A. 描述飞机电源系统时,应阐述容量和装载减少。

B. 描述飞机电源系统时,应阐述电源的容量和卸载。

C. 描述飞机电源系统时,应阐述容量和载荷去除。