If there is fuel leakage from the couplings, repair them.

A. Turn the handle of the door until the lower gate is lifted.

B. For lowering the upper door, door handle should be turned.

C. The lever of door should be turned until the lower door opens.

A. The properties of these sealants prevent corrosion.

B. Corrosion frequently occurs due to the features of these sealants.

C. The properties of these sealants make themselves easily corroded.

A. The specification gives the symbols for relays, diodes, and other parts of the system.

B. The specification gives the requirement for markings on relay, triode and other parts of the system.

C. The specification excludes symbols for relays, diodes, and other system parts.

A. Clean the surface with a soap and clean a water solution.

B. Use a soap-and-water solution to clean the surface.

C. Use a soap to clean the surface and a water solution.

A. During the retraction test, keep a close watch on the monitor.

B. Continuously observe the indications after the retraction test.

C. Monitor the indications during the retraction test.

A. Rise the cylinder up its install position.

B. Lift the cylinder above its installed position.

C. Lift the bushings above its installing position.

A. This system does not supersede the normal channels of communication for items not covered by the CAP.

B. This system will not change the normal ways of communication for items not listed by the CAP.

C. The normal methods of communication for items contained in the CAP will not be shifted.

A. STE是为了帮助读者理解他们所阅读的英语内容，特别是当这些读者的母语不是英语的时候。

B. STE开发了帮助读者理解他们所阅读的英语内容的规则，尤其是当这些读者的母语不是英语的时候。

C. STE是为了帮助英语文档的读者理解他们所阅读的内容而开发的，特别是当这些读者的母语不是英语的时候。

A. 用设置开关以重置运行时间。

B. 用重置按钮以重置运行时间。

C. 用重置按钮以重置格林威治时间。

A. 只有字典里没有出现的技术名词或者技术名词的一部分可以使用。

B. 对于词典中未批准的词,只有当它是技术名称或技术名称的一部分时才可以使用。

C. 仅当一个单词完全或部分是技术名词时,字典中未被批准的单词才可以使用。