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个体差异(individual variation)
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解析：同样剂量的某一药物在不同病人不一定都能达到相等的血药浓度，相等的血药浓度也不一定都能达到同等的药效，差异可能很大，甚至出现质的差异。
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Two sources of variation in the length of hex bolts exist. Production variation and measurement error. The QC manager knows that the standard deviation from these sources is 0.24" and 0.43" , respectively. What is the total standard deviation.A . .10 inch.B . .19 inch.C . .34 inch.D . .49 inch.E . .67 inch.
考题
For a given characteristic in a construction process, the standard deviation associated with production variation is 0.8", and the standard deviation associated with measurement variation is 0.6". The total standard deviation for this characteristic is:A . 1.4"B . 1.2".C . 1.0"D . 0.8"E . 0.2"
考题
143 For a given characteristic in a construction process, the standard deviation associated with production variation is 0.8", and the standard deviation associated with measurement variation is 0.6". The total standard deviation for this characteristic is:A. 1.4"B. 1.2".C. 1.0"D. 0.8"E. 0.2"
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The term sociolect is used for less drastic difference which is restricted to variation in pronunciation.()
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The term geographical dialect is used for less drastic difference which is restricted to variation in pronunciation.()
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In approximating costs, the estimator considers the possible causes of variation of the cost estimates, including.(71)。A．budgetB．planC．riskD．contract
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The compass rose on a nautical chart indicates both variation and ______.A.deviationB.annual rate of variation changeC.precessionD.compass error
考题
Compass error is equal to the ______.A.deviation minus variationB.variation plus compass courseC.combined variation and deviationD.difference between true and magnetic heading
考题
How is variation indicated on a small-scale nautical chart?______.A.Magnetic compass tableB.Magnetic meridiansC.Isogonic linesD.Variation is not indicated on small-scale nautical charts
考题
If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.A.Compass error and variation are equalB.Compass north will be true northC.Variation will equal deviationD.There will be no compass error
考题
Pitch variation is known as __________ when its patterns are imposed on sentences.A.intonation
B.tone
C.pronunciation
D.voice
考题
Features such as height,weight,and skin color differ from individual to individual and from face to face.A:change
B:vary
C:alter
D:convert
考题
单选题Magnetic variation changes with a change in（）.A
the vessel's headingB
sea conditionsC
seasonsD
the vessel's position
考题
单选题In approximating costs, the estimator considers the possible causes of variation of the cost estimates, including（） .A
budgetB
planC
riskD
contract
考题
单选题In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.A
open and individual tank valves openB
open and the individual tank valves closedC
closed and the individual tank valves closedD
closed and the individual tank valves open
考题
单选题The compass rose on a nautical chart indicates both variation and （）.A
deviationB
annual rate of variation changeC
precessionD
compass error
考题
单选题Which of the following statements is true concerning simple parallel resistance circuits?（）A
The total current flow equals the sum of the individual currentsB
The total current flow equals the reciprocal of the sum of the individual currentsC
The total resistance equals the sum of the individual resistanceD
The total voltage equals the sum of the individual voltages across each resistance
考题
单选题表示正态分布资料中的集中趋势最好采用A
meanB
varianceC
percentileD
standard deviationE
coefficient of variation
考题
单选题In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.A
open and individual tank valves openB
open and the individual tank valves closedC
closed and the individual tank valves closedD
closed and the individual tank valves open
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