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【单选题】
两样本均数间的差别的假设检验时,查t界值表的自由度为A.
n-1
B.
(r-1）（C-1）
C.
n1+n2-2
D.
1
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举一反三
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. Airline companies are responsible for transporting your luggage. If you cannot ...
A.
ask you to insure your luggage
B.
deliver it to where you live
C.
inform. you about its recovery
D.
ask you to pay some money for it
【简答题】Work in pairs. Practise a conversation acoording to the following situation and upload your recording and script. speaking task 1.docx
【简答题】电动机的运行想既能点动又能长动的时候可以在自锁环节增加____按钮。
【单选题】The primary liabilities of a commercial bank are
A.
bonds.
B.
mortgages.
C.
deposits.
D.
commercial paper.
【简答题】什么出台之前一定要进行充分的调查,研判谁是受损者、谁是受益者?这一分析对吗?
【单选题】A commercial bank __________.
A.
is a not-for-profit institution
B.
serves businesses, whereas a non-commercial bank serves individuals
C.
must have a charter, or license, from either the federal government or a state government
D.
must be a member of the FDIC
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