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【单选题】
热风炉烧炉时严格控制烟道温度的主要目的是()。
A.
减少热损失
B.
节约煤气
C.
防止烧坏下部炉衬
D.
保护炉箅子和支柱
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参考答案:
举一反三
【判断题】END指令称为“结束指令”它就是PLC的停机指令。
A.
正确
B.
错误
【单选题】当绘图比例为 5:1 时,属于( )比例。
A.
任意比
B.
放大
C.
缩小
D.
原值
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【简答题】Fill in the blanks with the proper forms of the words given below, some words can be used more than once: Assuage savor confound smite Noah's Ark a tower of Babel 1.These rooms are tenanted by di...
【简答题】Unit 1 Book3 FILL IN THE GAP WITH WORDS OR PHRASES GIVEN IN BOX. 只写单词前面的大写字母。 A. budget B. illustrate C. aside from D. wicked E. on balance F. resist G. haul H. pursue I. lower J. involve K...
【简答题】Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. You may not use a...
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