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【多选题】
The effect of pH on enzyme activity is characterized by( )A.
Each enzyme has its optimum pH
B.
The farther away from the optimum pH of the enzyme, the lower the activity of the enzyme
C.
Peracid or overbase can inactivate the enzyme
D.
The optimum pH of the same enzyme may vary depending on the type and concentration of the substrate
E.
The same pH of the same enzyme is a fixed value
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举一反三
【单选题】After reading the article, one would refrain from concluding that_________
A.
optimism reigns in regard to getting PhD dropouts to return to their pursuit of the degree
B.
a PhD dropout, by and large, does not have what it takes to. learn the degree
C.
colleges and universities employ a substantial number of PhD dropouts
D.
the PhD' s are not earning what they deserve in nonacademic .positions
【简答题】表单实际上包含两个重要组成部分:一是描述表单信息的( );二是用于处理表单数据的服务器端( )。
【单选题】The tone of the author in this passage is most probably______.
A.
concerned
B.
objective
C.
optimistic
D.
indifferent
【简答题】表单实际上包含两个重要组成部分:一是描述表单信息的_________,二是用于处理表
【单选题】Chapter3: According to the author, which of the following is the difference between appreciation and flattery?
A.
Appreciation is insincere, and flattery is sincere.
B.
Appreciation comes from the heart out and flattery comes from the teeth out.
C.
Appreciation is universally condemned, and flattery is universally admired.
【简答题】表单实际上包含两个重要组成部分：一是描述表单信息的（），二是用于处理表单数据的（）表单处理程序。
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