开凿平硐作为爆炸材料库，硐口横堤必须高出硐口（）m。
A、l
B、l.2
C、1.5
D、2
参考答案：C
62. This area is famous _____ its apples and it is famous _____ the home of apple.
A．with; for
B．for; as
C．for; as
D．as; to
Z6脱硫吸收塔出口烟道直径为（）。
A.6500mm
B.6600mm
C.6700mm
D.6800mm
