1Gy等于多少焦耳.千克-1(J.kg-1)。()
A.0.01
B.0.1
C.1
D.10
E.100
参考答案:C
—Was the label ________your luggage?
— No,it wasn’t.
A.attached to
B.attach to
C.attaching to
D.attached
发生设备故障及时通知(),立即停车处理。
A.工长
B.调度
C.CR1
D.值班主任