591、Technical texts often contain long groups of words that have the function of one part of speech in asentence

技术文本常常包含很长的词组，这些词组在一个句子中具有一个个词性的功能。

技术文件常常由很长的词汇构成，这些词在句子中的词性只有一种。

C 技术文件常常包括长词组，在同一句子中这些词的功能是一种词性。

正确答案：A

897、持续适航方案检查号也显示在页面底部,是 CAP 节号。

896、不要让压力小于或大于 30psi,

895、不要操作刹车来降低蓄压器中的压力。

894、泵安装在液压马达后面。

893、When the spring compresses,the valve opens

892、When a fire starts, the temperature increases and causes the detector to operate.

891、Use proper equipment to do the inspection, instead of visual check.

890、Transfer of hydraulic fluid between hydraulic system A and B is caused by improper operation of system controls or wornequipment.

889、To get the correct clearance,add special shims,as necessary.

888、This task gives the maintenance steps which prepare the airplane for flight with both air conditioning packs inoperative