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【单选题】
下列关于酶的叙述中，正确的是 [ ]A.
酶的化学本质都是蛋白质
B.
所有的酶都是在细胞内发挥作用
C.
能合成激素的细胞都一定能合成酶
D.
酶的最适pH值都是7左右
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反馈参考答案：
举一反三
【简答题】A．200, 000 tons. B．2 million tons. C．20 million tons. D．2,000 tons.
【单选题】If a vessel’s full displacement is 18,880 tons,light ship displacement is 5,500 tons,deadweight is 13,880 tons,stores 1,800 tons and the constant 80 tons,then which of the following is the vessel’s ne...
A.
18,880 tons
B.
18,000 tons
C.
12,000 tons
D.
9,380 tons
【简答题】简述为什么中药药理学的研究应该遵循中医药理论的指导。
【多选题】导游员带团着装要求是( )。
A.
服装要与身份、年龄、职业相符
B.
不能喧宾夺主
C.
服装要符合时间、地点、环境的要求
D.
配饰应少而简洁，恰到好处
E.
着装要规范整洁
【单选题】We`ve got 230 tons of explosive cargo on deck and 120 tons of flammable cargo in NO. 2 hold
A.
There is 230 tons of flammable cargo on deck
B.
There is 120 tons of flammable cargo on deck
C.
There is 230 tons of explosive cargo on deck
D.
There is 120 tons of explosive cargo on deck
【判断题】I. Spring A. temperature B. color C. implication of life II. Autumn A. color B. temperature C. implication of life III. Winter A. temperature B. implication of life C. color
A.
正确
B.
错误
【单选题】Consider Figure 4.2. With free trade, the United States achieves market equilibrium at a price of $____. At this price, ____ tons of steel are produced by U.S. firms, ____ tons are bought by U.S. buye...
A.
$450, 5 tons, 60 tons, 55 tons
B.
$475, 10 tons, 50 tons, 40 tons
C.
$525, 5 tons, 60 tons, 55 tons
D.
$630, 30 tons, 30 tons, 0 tons
【单选题】If vessel’s full displacement is 18,880 tons, light ship displacement is 5,500 tons, deadweight is 13,880 tons, stores 1,800 tons and the constant 80 tons, then which of the following is the vessel’s ...
A.
18，880 tons
B.
18，000 tons
C.
12，000 tons
D.
9，380 tons
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