片帮煤增多，煤质变软，说明有冒顶危险。
参考答案：对
—I didn’t know this is a one way street, Sir.
—___________.
A．That’s all right.
B．I don’t believe you.
C．How dare you say that.
D．Sorry, but that’s no excuse.
航站区域雷达TAR（在37千米以内）的定位精度为（）千米。
A.1.8
B.2.0
C.2.4
D.1.6
