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【单选题】
下列打捞矛属于不可退的是（）。A.
接箍打捞矛
B.
可即式倒扣打捞矛
C.
提放式分瓣打捞矛
D.
提放式倒扣打捞矛
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A.
Identify potential solutions
B.
Evaluate solutions and select the best
C.
Select hardware and software
D.
Develop application specifications
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A.
SELECT e.id, d.deptname FROM employee e, department d WHERE e.id > 4
B.
SELECT e.id, d.deptname FROM employee e INNER JOIN department d ON e.deptid = d.id WHERE e.id > 4
C.
SELECT e.id, d.deptname FROM employee e FULL OUTER JOIN department d ON e.id = d.id WHERE e.id > 4
D.
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【单选题】What effect does the writer predict that Apple hardware will have on the sales of Microsoft?
A.
It will have little effect on Microsoft corporate sales.
B.
It will give Microsoft a greater market share.
C.
It will mean that Microsoft customers have cheaper hardwares.
D.
It will produce a surge in Microsoft sales.
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【单选题】To convert a frequency distribution to a relative frequency distribution:
A.
find the difference between consecutive lower class limits.
B.
divide the class frequency by the total number of observations.
C.
multiple the class frequency by 100.
D.
ivide the lower limit of the first class by the class interval.
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