燃烧的类型归纳起来有()
A、有烟燃烧
B、无烟燃烧
C、熏烟燃烧
D、闪燃、着火、自燃、爆炸
参考答案:D
We don’t of her going to work in the fields in the sun.
A.admit
B.agree
C.prove
D.approve
点火正时不准可能会引起怠速时发动机熄火。