Make sure that the two spigots at the bottom of the unit engage.

A. 始终遵守如下保持电线处于良好状况的法规。

B. 始终遵守预防措施，然后保持电线处于良好状况。

C. 始终遵守如下预防措施以保持电线处于良好状况。

A. Make sure that there is supplied airflow in the work area.

B. Make sure that there is sufficient airflow in the work area.

C. Make sure that there is efficient airflow in the work area.

A. The usual control for the left pack ensures that it supplies air at a temperature. The temperature gives the occasional cooling for the flight compartment.

B. The normal control for the left pack makes sure that it supplies air. The cooling provides the necessary temperature for the flight compartment.

C. The usual control for the left pack assures that the temperature of the supplied air will provide the control cabin with the needed cooling.

A. 前外机身勤务门止动点缺失。

B. 前外机身勤务门止动点失效。

C. 前外机身勤务门止动点凸起。

A. This Section shall be clearly stated and cross-referenced to the proper paragraph in Section 2 of the Handbook which consists of limitations.

B. This Section contains limitations which shall be clearly stated and cross-referenced to the proper paragraph in Section 2 of the Handbook.

C. The proper paragraph in Section 2 of the Handbook shall describe and cross-reference this Section included in this limitations.

A. The specification is designed to cut off the cost to general aviation airplane owners and operators and maintenance personnel.

B. The target of the specification is to reduce the cost of general aviation airplane owners and operators and maintenance personnel.

C. The objective of the specification is to minimize the cost to general aviation airplane owners and operators and maintenance personnel.

A. However, manufacturers are following the same fundamental systems and sequence of subject arrangements even if some systems, which are not available, may be bypassed.

B. Nevertheless, each manufacturer is expected to follow the same sequence of basic system and subject arrangements even though some systems may be omitted when not applicable.

C. Even so, all manufacturers are expected to submit to the same arrangements of main systems and subject sequences even though certain systems would be ignored when not applicable.

A. 每间隔20秒点击一次。

B. 咔哒声的时间间隔必须为20秒。

C. 必须将咔哒声的时间间隔调整为20秒。

A. The charged resister acts as a primary battery.

B. The discharged resister acts as a secondary battery.

C. The charged capacitor behaves as a secondary battery.

A. 当你连接较长的技术名称以使它们更清楚地展示给读者时，连接的一组单词也可以算作适用的名词词组中的一个单词。

B. 当你用连字符连接较长的技术名称以使读者更清楚时，用连字符连接的一组单词也可视为适用的名词词组中的一个单词。

C. 当你使用较长的技术名称来使其结构更清楚地呈现给读者时，所使用的词组也可视为复杂的名词词组中的一个单词。