The water is free. You can drink _________ possible.        [ ]

A. as much as          

B. as many as                

C. as more as              

D. as most as

X6132型万能铣床圆工作台回转运动调试时，主轴电机启动后，进给操作手柄打到零位置，并将（）打到接通位置。

A、SA1

B、SA2

C、SA3

D、SA4