437、每个句子最多 20 个单词。

A. 　 Chromate is added into the primer to protect corrosion

B. 　 A material that protects the primer from corrosion in contained in it.

C. 　 There is corrosion-preventive material in the primer.

A. 　确保杆之间有合适的间隙。

B. 　确保杆之间有合适的角度。

C. 　确保杆之间有足够的间隙。

A. 　如果其他地方提供了信息,则改版记录是可选的

B. 　如果其他地方提供了信息,则改版记录是必选的

C. 　如果其他地方提供了信息,则改版记录是过期的

A. 　制动系统用于降低滑行速度以及发动机停车状态下的停止螺旋桨旋转

B. 　制动系统是用来减少停车时间或在发动机关车的情况下使螺旋桨停止转动

C. 　在发动机低速运转或螺旋桨低速旋转时,制动系统能快速刹住

A. 　要先安装螺钉(10),才能安装盖组件(9

B. 　要拆下盖组件(9),首先要拆下这四个螺钉(10)

C. 　要拆下螺母(9),首先要拆下这四个螺栓(10

A. 　防腐剂可能存在于腐蚀严重的部位

B. 　腐蚀敏感的部位可以安装防腐组件。

C. 　易受腐蚀的部位可能有防腐剂。

A. 　保护漆将防止腐蚀达 6 个月。

B. 　保护涂层将防止锈蚀达 6 个月。

C. 　保护漆将保护腐蚀达 6 个月。

A. 　本节必须规定型号合格证所要求的每次强制更换时间,结构检查间隔,以及相关的结构检查程序

B. 　本节必须规定每一次强制更换时间,结构检查间隔,和机型证书所要求的相关的结构检查程序

C. 　本节必须规定部件更换的时间,结构检查时间,和相关的结构检查程序所需的型号合格证

A. 　 If the wordlist, meanings of words, and the types of sentence skeleton in a text are under controlled, the
change between texts will be smallest.

B. 　 lf the wordlist, meanings of words, and the types of sentence structure in a text are under controlled, the
change between texts will be minimum.

C. 　The variation between texts will be minimal. if the meaning of the new words and the sentence architecture
in the article are well controlled

A. 　 The same word "base" can go into different technical name categories when it is used with different
meanings in different contexts.

B. 　 The same word "base”, when it has different meanings in different environment, it can be divided into
different technical name categories.

C. 　 When the word "base" can be divided into different technical noun categories, it has different meanings in
different language environment.