充油电缆油压报警系统故障，属于电缆（）。
A.接头和终端缺陷
B.线路附属设备缺陷
C.本体缺陷
参考答案：B
--- Thank you ever so much for your timely help?
--- ____________ .
A．Glad to hear that.
B．With pleasure.
C．Thank nothing of it.
D．All right.
在使用燃气时，要正确调整燃气与空气的混合比，才能达到最佳燃烧状态。( )
