某算法的时间复杂度为O(logn),表明该算法的()。
A. 问题规模是O(logn)。
B. 执行时间等于O(logn)。
C. 执行时间与O(logn)成正比
D. 问题规模与O(logn)成正比。
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This offer______on October 20, 2017. Your immediate reply by E-mail will be appreciated.
A. extends
B. expires
C. includes
D. stops
We can______you that our products are superior in quality and reasonablein price.
A. ensure
B. sure
C. assure
D. insure
We are not in a position to offer firm, as the goods are______.
A. without stock
B. not in stock
C. out of stock
D. no stock
We regret to say that we can not accept your offer, as your price is found to be______the high side.
A. with
B. on
C. from
D. towards