发动机气缸套外部与冷却液直接接触的叫干式缸套。
参考答案：错
二（3）班有男生34人，女生20人，有48人参加了合唱队。问：没有参加合唱队的有多少人？
I didn't know the girl you the sheep. [ ]
A. had fed
B. had her fed
C. had feed
D. had to feed
