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【单选题】
齿轮传动时,由于接触表面裂纹扩展,使表面上小块金属脱落,形成麻点和斑坑,这种现象称为
A.
轮齿疲劳折断
B.
齿面磨损
C.
齿面疲劳点蚀
D.
齿面胶合
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参考答案:
举一反三
【单选题】蛋白质的一级结构及空间结构取决于
A.
氨基酸组成和顺序
B.
分子中盐键
C.
分子中氢键
D.
分子内部疏水作用
【判断题】The man asks the woman to take him to the Students ’ Center.
A.
正确
B.
错误
【简答题】下面选项中,用于存储小数的类型是A. FLOAT B. DOUBLE C. DECIMAL(6 , 2) D. INT
【简答题】Listen to the conversations and choose the information you hear. 1. A Mary asks Jason to repair the fax machine for her. B. Mary wants to know the telephone number for Chicago Golden Time . C. Jason g...
【简答题】A. Mary Wang majors in Business English. B. Mary Wang doesn't like her major C. The company wants a secretary. 2. A. The man is good at both English and Japanese. B. The man can speak fluent English. ...
【简答题】It is raining outside. A bus 1 at a small bus stop. A man 2 out of the window. He sees a woman. She is selling 3 . The man wants 4 a cake. But he doesn’t want to go out because it is raining. The man ...
【简答题】It is raining outside. A bus 1 at a small bus stop. A man 2 out of the window. He sees a woman. She is selling 3 . The man wants 4 a cake. But he doesn’t want to go out because it is raining. The man ...
【多选题】下面选项中,用于存储小数的类型是
A.
FLOAT
B.
DOUBLE
C.
DECIMAL(6,2)
D.
INT
【单选题】“君子死而冠不免”讲的是____。
A.
子羔
B.
曾参
C.
子路
D.
颜回
【简答题】用括号内动词的适当形式填空。 1. The teacher asks us _____(listen) carefully in class. 2. The girl _____(use) to do some reading when she was a child. 3. The old man _____ (be) ill for three years. 4. If you _______...
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