企业登记管理的主体是（）。
A.企业
B.国家
C.董事长
D.税务局
参考答案：B
He was generous with his time, ______ I was grateful..
A．for which
B．at which
C．with which
D．with which
测定COD，若取除盐水做空白样时俯视移液管了，其他正常，那么测定结果与实际值（）
A.偏高
B.偏低
C.不变
D.结果不确定
