各级设备管理部门应按照分级管理的原则,负责对本单位设备管理工作进行()、督促检查和()。
参考答案:业务指导;考核
纸塑袋、纸袋等密封包装其密封宽度应为()
A.≥1mm
B.≥2mm
C.≥3mm
D.≥5mm
E.≥6mm
In order to ensure that a RACON signal is displayed on the radar,you should().
A.increase the brilliance of the PPI scope
B.turn off the interference controls on the radar
C.use the maximum available range setting
D.increase the radar signal output