输油泵的作用是将柴油从油箱吸入输油泵并以一定压力送至()。
A.喷油器
B.燃烧室
C.调速器
D.喷油泵
参考答案:D
--Do you think you could do without help?
-- _____. This isn't the first time for me.[ ]
A. Take care
B. Hurry up
C. Not exactly
D. Don't worry
一块长方形菜地长85米,宽60米。
(1)在菜地四周围篱笆,需篱笆多少米?
(2)如果每平方米可以收土豆6千克,这块菜地可以收土豆多少千克?