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【单选题】
工艺标准库中要求，主变压器油池壁预制压顶梁厚度不应小于（）。A.
60mm；
B.
80mm；
C.
100mm；
D.
120mm。
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举一反三
【单选题】Whatdoes the structural view of language see language?
A.
a system of categories based on the communicative needs of the learner
B.
a communicative tool to build up and maintain social relations between people
C.
a linguistic system made up of various subsystems
D.
a linguistic system and a means for doing things
【简答题】What opinion does the structural view hold?
【单选题】What does the structural view of language see language?
A.
A system of categories based on the communicate evaluating A system of categories based on the communicating needs of the learner
B.
A communicating tool to build up the and maintain social relationships between people
C.
A linguistic system made up of various sub systems
D.
A linguistic system and a means for doing things
【简答题】What is the structural view of language?
【多选题】关于水污染造成的危害,下列说法正确的是
A.
通过饮水或者食物链危害人类健康
B.
使用污水进行灌溉，会影响作物的产量和质量
C.
危害工业生产
D.
容易造成水体富营养化
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