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If the square root of t is a real number, is the square root of t positive？（1) t＞0 （2) t2

If the square root of t is a real number, is the square root of t positive？

(1) t＞0

(2) t2＞0

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第1题

If x is a positive number and 1/2 the square root of x is the cube root of x, then x=A．64B

If x is a positive number and 1/2 the square root of x is the cube root of x, then x=

A．64

B．32

C．16

D．4

E．1

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第2题

The square root of 800 is between which of the following integers？A．21 and 25B．24 and 28C．

The square root of 800 is between which of the following integers？

A．21 and 25

B．24 and 28

C．27 and 31

D．30 and 34

E．33 and 37

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第3题

The square root of 636 is between which set of integers？A．24 and 25B．25 and 26C．26 and 27D

The square root of 636 is between which set of integers？

A．24 and 25

B．25 and 26

C．26 and 27

D．27 and 28

E．28 and 29

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第4题

What is the magnitude of the Cartesian vector having the x, y and z axis components to be A, B and C？

A、Square root of the squares each A, B and C

B、Square of the squares each A, B and C

C、Cube root of the squares each A, B and C

D、Cube of the squares each A, B and C

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第5题

In case demand in different geographical regions is about the same size and independent, aggregation increases safety inventory by the square root of the number of areas aggregated.

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第6题

If the number of independent stocking locations decreases by a factor of n, the average safety inventory is expected to （).

A、decrease by a factor of the square root (平方根）of n

B、decrease by a factor of n

C、increase by a factor of the square root (平方根）of n

D、increase by a factor of n

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第7题

The coefficient of determination is:

A、the square root of the correlation coefficient.

B、between -1.00 and 1.00.

C、equal to (1 - (SSE/ SS Total)).

D、the treatment mean square plus the error mean square.

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第8题

The sample standard deviation is found by taking the square root of _______.

A、the sample mean

B、the sample variance

C、the coefficient of variation

D、the mean absolute deviation

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第9题

A comparison of average speed, root mean square speed and most probable speed shows that t

hey are not the same. Is this the same for one-dimensional velocity distribution？ Show the expression of the three quantities for 1D velocity .

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第10题

If demand increases by a factor of k, the number of orders placed per year should increase by a factor of （).

A、k

B、k/2

C、k-squared (k的平方）

D、the square root of k（k的平方根）

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If the square root of t is a real number, is the square root of t positive？ （1) t＞0 （2) t2

If the square root of t is a real number, is the square root of t positive？（1) t＞0 （2) t2