发动机活塞环的开口在装配时不能与活塞销孔对正。
参考答案:对
Our pants are _________.[ ]
A. the different
B. the same
C. some
—Has Lily come (). —Yes, she has been here for over ten minutes ().
A.yet; already
B.already; yet
C.yet; yet
D.already; already