馈线接地点是否符合要求，10~60米做（）处接地
A.3
B.4
C.5
D.6
参考答案：A
设甲级防火门( )个。
A．1．
B．2
C．3
D．4
-----Does Tom _______ an eraser? ----- Yes. He _________ one.
A. have ; have B. have ; has C.has ; have
