The strength of Congress lies in its numbers because ______.

A．in numbers, there is strength

B．it controls the budget

C．it does not have to concern itself with the constitutionality of the law it enacts

D．no member can be held individually accountable for its actions

锅炉进行底部排行时，每次排污量可接排至（）水位表高度考虑。

A.最低

B.1/3~1/2

C.1/2

D.2/3~1/2