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【单选题】
碱性磷酸酶催化的反应中，通过测定，得知在最适反应条件下，在40 ml酶样品的作用下，每5分钟有80 毫摩尔的磷酸对硝基苯酚分子水解为对硝基苯酚与磷酸，则1 ml酶样品所含的酶活力国际单位（IU）数为A.
20，000
B.
40，000
C.
200，000
D.
400，000
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【简答题】psychomotor domain
【单选题】Which of the following statements is correct as to the methods used to teach within the psychomotor domain?
A.
Practice is the most important method for learning a psychomotor skill because the four methods all involve it.
B.
Watching the sequence in a game environment enable the learners to practice the sequence in the environment.
C.
A pen is a kind of Haptic Devices when it's manipulated like the scalpel by surgeons for learning to perform surgery with watching a patient on a large screen.
D.
Observation provides an overview of the steps and it's to see the sequence of actions.
【简答题】动态环境是指由于社会经济因素的发展变化,引起企业( )环境的变化,从而引发( )、( )、( )的不断变动。
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