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【单选题】
对于齿面硬度≤350HBS的闭式钢制齿轮传动,其主要失效形式为 :A.
齿面胶合
B.
齿面疲劳点蚀
C.
齿面磨损或轮齿疲劳折断
D.
轮齿塑性变形
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Harmful or negative consequences of the functions of mass media are
A.
lled
B.
repercussions
C.
ramifications
D.
dysfunctions
E.
displacement
【简答题】下列除哪项外,均可用炒焦法炮制( )。A.山楂B.槟榔C.槐花D.川楝子A. 1 B. 1 C. 1 D. 1
【简答题】I. Connect each word to its meaning. ( ) 1.gifted a. good looking or beautiful ( ) 2. intelt b .clever or smart ( ) 3. delete c. harmful or bad ( ) 4. professional d. to remo...
【简答题】Match each word to its meaning. (从右边这一栏找到左边单词的相应英语解释) 1 gifted a good looking or beautiful 2 intelt b clever o...
【单选题】Harmful or negative consequences of the functions of mass media are called ______.
A.
repercussions
B.
ramifications
C.
dysfunctions
D.
displacement
【单选题】negative
A.
good looking or beautiful
B.
clever or smart
C.
harmful or bad
D.
to remove or cross out something
E.
connected with a job that needs special skill or training
F.
having a natural talent
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