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。
