当柴油机喷油器喷出的（）中有肉眼能看见的飞溅油粒，局部存在浓稀不均的现象时，应对其进行拆检。
A.油束
B.水束
C.气束
D.可燃气束
参考答案：A
—May I help you？You seem to be having some problems.
—________，thanks.I think I can manage.(2012·安徽)
A．All right
B．No problem
C．It's all right
D．There's no way
植物种子发芽的三要素是什么？
