井下隔爆型电气设备进线嘴中，电缆与密封圈的间隙不大于（）。
A.0.5mm
B.1mm
C.2mm
D.3mm
参考答案：B
职务发明创造申请专利的权利属于( )。
A．发明人
B．发明人所在单位
C．发明人及其所在单位
D．发明人与其所在单位约定的单位或者个人
What would most likely prevent a SART’s signal from being detected?（）
A.Signal absorption by the ionosphere
B.Heavy sea swells
C.The rescue personnel were monitoring the 10-cm radar
D.The rescue personnel were monitoring the 3-cm radar
