Thesub-multipleprefix“micro”means（）.
A: thousandth(10tothe-3rdpower)
B: millionth(10tothe-6thpower)
C: billionth(10tothe-9thpower)
D: trillionth(10tothe-12thpower)
A: thousandth(10tothe-3rdpower)
B: millionth(10tothe-6thpower)
C: billionth(10tothe-9thpower)
D: trillionth(10tothe-12thpower)
举一反三
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