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【简答题】
人体中的某种酶的催化反应的活化能为 50 kJ·mol -1 ,正常人的体温为 310K ( 37 °C ) ,问发烧到 313K ( 40 °C ) 的病人体内,该反应的反应速率增加了多少倍?
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【单选题】--Mom,I want to eat _ .My friend invite me to take part in his birthday.
A.
at home
B.
out
C.
in a park
D.
in a zoo
【简答题】,桃李罗堂前。
【简答题】合金相结构主要有__________和__________,其中__________常作为合金的基体相,而__________少量、弥散分布时可强化合金,常作为强化相。
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【简答题】Please fill in the blanks with the correct words . A. be independent B. on your own A : Mom, I want to move out. B : Well, if you live 1 , you'll have to pay for everything yourself. A : No problem. I...
【简答题】国际结算的发展有哪三个标志性的方面? 2. 国际贸易结算包括哪些方式?
【单选题】Hi, I’m Bob. My mom asked me to go shopping with her. I hate it! Shopping is so boring. Look at the long list: twelve eggs, two kilos of pork, a box of butter, some chicken, a jar of jam... My mom sai...
A.
They have no food.
B.
Many things are on sale.
C.
They are very hungry.
D.
Things are sold out.
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