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【多选题】
酶与一般催化剂的主要区别是A.
对底物有高度的特异性
B.
对催化反应的选择性
C.
降低活化能
D.
对理化因素敏感
E.
反应前后没有质和量的改变
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举一反三
【单选题】Which of the following is true with regard to products?
A.
The quality of products is far more difficult to measure than that of services.
B.
Products do not include experiences, organizations, persons, places, and ideas.
C.
Products are not meant for sale in the market.
D.
Products include services, events, persons, places, organizations, ideas, or a mixture of these.
【单选题】Which of the following is true in regard to bridges?
A.
Bridges do not isolate broadcast domains.
B.
Bridges broadcast packets into the same collision domain they were received from.
C.
Bridges use IP addresses to filter the network.
D.
Bridges can translate from one media to a different media.
【简答题】Cement Co is a company specialising in the manufacture of cement, a product used in the building industry. The company has found that when weather conditions are good, the demand for cement increases ...
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