EEBD应能供使用者不少于10分钟的使用时间，其供气量大于（）升/分钟。
A.35
B.36
C.37
参考答案：A
-------I’m sorry I could not go to your birthday party yesterday.
--------__________. I know you are very busy recently.
A Go ahead. B No kidding. C Forget it. D Not really.
电台证书中需要每年定期检验的有（）.
A.示位标检测报告.货船无线电安全证书
B.GMDSS操作员证书.货船无线电安全证书
C.产品证书.岸基协议
D.示位标检测报告.岸基协议
