运行中如发现同一车轮有连续()个或()个以上的螺栓被拉断，则应先()，后检查轮辋、螺栓零件是否有()或缺陷，及时更
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Which of the following words matches the sound /redi/？
A. ready
B. read
C. ride
D. red
—The 2016 Olympic Games ________ in Brazil. Would you like to go there？ — Maybe, if possible
A. are held
B. were held
C. will be held
D. have been held
斜交结构外胎由那几部分组成()。
A. 胎面胶、缓冲层、帘布层
B. 胎面胶、缓冲层、帘布层、胎圈
C. 缓冲层、帘布层、胎圈
D. 胎面胶、缓冲层、胎圈
发动机润滑系由那几部分组成？()
A. 机油泵、机油滤清器、机油散热器、机油输油泵
B. 机油泵、机油滤清器、机油散热器、机油密封环
C. 机油泵、机油滤清器、机油输油管、机油密封环
D. 机油输油泵、机油滤清器、机油散热器、机油密封环
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