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【单选题】

神坛的目的是提高刚表层的硬度杰耐磨性,而()仍保持任性和高塑性。

A.
组织
B.
心部
C.
局部
D.
表层
题目标签:耐磨性硬度神坛
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参考解析:
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举一反三

【单选题】能生产高硬度物料的流能磨属于( )

A.
扁平式气流磨
B.
循环管式气流磨
C.
对喷式气流磨
D.
流化床对射磨

【单选题】There are three branches of medicine. One is called "doctor medicine" or "scientific medicine". Scientific doctors try to observe sicknesses, look for logical patterns, and then find out how the human...

A.
describe different types of medicine
B.
argue for the importance of medicine in health care
C.
show the crucial role religion plays in medical treatment
D.
compare the educational background of three different types of patients