统计从业资格认定属于国务院决定予以保留的行政许可项目。 ()
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is true regarding simple sort techniques.
A. Both insertion sort and selection sort require O(n)moves.
B. Exchange sort is frequently referred to as a bubble sort.
C. If random data are in an array that is to be sorted, an insertion sort will give the best performance for large elements with small sort items.
D. Exchange sort is the least expensive.
【23】
A. at best
B. at least
C. at most
D. at worst
What is the author's attitude toward the U. S. health care system？
A. Prejudiced.
B. Critical.
C. Sympathetic.
D. Approving.
It seems that manufacturers will remain reluctant to make improvements unless______.
A. they can do so at a very low cost
B. they find their machines hard to operate
C. they have difficulty selling their products
D. they receive a lot of complaints about their machines
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