在投入热网加热器时,一般控制其出口水温升在()℃/min。
A.1.0
B.0.7
C.1.5
D.0.5
参考答案:D
08-32捣固车的车钩缓冲器为()橡胶缓冲器。
A、1号
B、2号
C、3号
D、MX-1型
32. —Mom, I can’t see any point in working hard at all the subjects at school.
— Come on, dear. Years of hard work will surely ____ in the future of your career.
A.make sure
B.pay off
C.bring back
D.pay back