出口自行车在办理报检手续时,须提供出口质量许可证。( )
参考答案:对
Don’t drink and drive, or you’ll be punished by _____ of your driver’s license.
A.revision
B.permission
C.conclusion
D.suspension
牙科电焊机的熔焊原理是 ()
A.电阻热熔焊
B.高频振荡熔焊
C.红外加热熔焊
D.化学熔焊
E.高温熔焊