推土机加油时应注意的事项有哪些?
参考答案:加油时,关闭发动机,在通风良好出加油。加油后拧紧所有燃油和机油箱盖。
All of us burst into laughter _____ we saw Mr. Bean’s funny appearance.
A.on the instant
B.for an instant
C.the instant
D.in an instant