单选题（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.AAs many asBSo many asCAs much asDAs more as
单选题
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
A
As many as
B
So many as
C
As much as
D
As more as
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