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【单选题】
两独立样本 资料的秩和检验中, 查 T 届值表的条件为A.
N<50< /div>
B.
N ≤ 50
C.
n 1 ≤ 10, n 2 ≤ 10
D.
n 1 ≤ 10, n 2 -n 1 ≤ 10
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【单选题】A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain ______.
A.
is more flexible and has the ability to absorb shock because of its weight
B.
is less subject to wear and damage from abrasion
C.
requires little maintenance
D.
All of the above
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