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【多选题】
固定化酶的制备方法通常 为( )A.
吸附法
B.
包埋法
C.
共价结合法
D.
共价交联法
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【简答题】If there are only red, blue, and green marbles in a jar, what is the ratio of red to blue marbles? (1) The ratio of red to green marbles is 2:3. (2) The ratio of green to blue marbles is 6:5.
【单选题】The ratio of 2 quantifies is 5 to 6. If each of the quantities is increased by 15, what is the ratio of these two new quantifies?
A.
5:6
B.
25:27
C.
15:16
D.
20:21
E.
It cannot be determined from the information given.
【单选题】Magenta Ltd has a current ratio of 1.5, a quick ratio of 0.4 and a positive cash balance. If it purchases inventory on credit, what isthe effect on these ratios?
A.
Current ratio decrease and Quick ratio decrease
B.
Current ratio decrease and Quick ratio increase
C.
Current ratio increase and Quick ratio decrease
D.
Current ratio increase and Quick ratio increase
【简答题】What is the duty ratio? How to calculate the duty ratio?
【简答题】What is the ratio of bronze to gold medals earned by Italy and France combined?
【单选题】What is the correct definition of nozzle area expansion ratio?
A.
The ratio of nozzle exit area to the throat area
B.
The ratio of the nozzle area at the inflection point to the throat area
C.
The ratio of throat area to the nozzle inlet area
D.
The ratio of throat area to the area at the point of inflection
【单选题】If a square and an equilateral triangle have equal perimeters, what is the ratio of the area of the triangle to the area of the square?
A.
B.
C.
D.
E.
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