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【多选题】
内螺纹铜管在拉伸过程中，道次在整个成型过程中的作用是：（）
A.
壁
B.
修整铜管外壁光洁度
C.
成齿
D.
起稳定拉伸作用
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【单选题】Animals in the desert have a problem getting water and keeping it. Insect-eaters get their liquids from their food. Most desert dwellers avoid the drying heat as much as possible, spending their time ...
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【单选题】Animals in the desert have a problem getting water and keeping it. Insect-eaters get their liquids from their food. Most desert dwellers avoid the drying heat as much as possible, spending their time ...
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【单选题】Animals in the desert have a problem getting water and keeping it. Insect-eaters get their liquids from their food. Most desert dwellers avoid the drying heat as much as possible, spending their time ...
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【判断题】“例外的只有破晓或入暮,那时山上只有一片微光,一片柔静,一片宁谧。”运用了排比的修辞手法。
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