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【单选题】
The Role of Price What is price? Price is often said to be the amount of money people must have to get something (19) .That is to say, we take prices as a formal (20) indicating the quantities of money needed to acquire a given quantity of goods or services. When a loaf of bread is (21) as $0.50, it means the seller provides one loaf of bread and the buyer (22) $0.50. If a seller wishes to change prices, what can he do? There are several ways to do that. Suppose when there is a (23) of sugar cane, there will be an increase in the price of sugar. (24) the seller can change the price by increasing the quantity of money to be given by the buyer. This is the first way. The second way to change price is to change the quantity of goods and services. If the quantity of a product remains (25) , but the quality has been decreased, then the price has (26) increased. This is the third way. Price can also be changed by offering discounts, (27) goods or services. (28) this case, the actual price of goods is reduced. There are also some other ways to change prices. which either increase prices or reduce prices. Price (29) play a major role in a market economy. When demand for a product or service is greater than the supply, buyers (30) the price up. If costs remain unchanged, the higher price (31) greater profits and the producers are able to (32) in resources to produce even greater quantities of the product. On the other hand, if supply is greater than demand, there are (33) to decrease prices and reduce output. These pressures lead producers to put their resources into other uses. (19)
A.
sold
B.
requested
C.
desired
D.
wished
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【单选题】真核生物呼吸链的存在部位()
A.
细胞膜
B.
微粒体
C.
线粒体内膜
D.
线粒体外膜
E.
细胞核
【单选题】含酚废水主要来自于炼油、造纸、炼焦、合成氨和化工行业,挥发酚多指沸点在 °C以下的酚类,通常属于一元酚。
A.
1 00
B.
1 50
C.
1 80
D.
2 30
【单选题】在公共实验场所,手提式灭火器的最大保护距离是?
A.
20 米
B.
25 米
C.
30 米
【简答题】蛋白质元素组成的一个重要特征是:任何生物蛋白质,其氮含量一般都在( )左右。
【简答题】RC 电路的零状态响应是指初始状态为 0 时,在电路中产生的响应。它反映了电容的 __________ 过程。(请选择充电还是放电)
【单选题】真核生物细胞中,呼吸链存在的部位是 。
A.
细胞质
B.
细胞核
C.
线粒体
D.
高尔基体
【单选题】真核生物呼吸链的存在部位是
A.
细胞膜
B.
微粒体
C.
线粒体内膜
D.
线粒体外膜
E.
细胞核
【判断题】RC 电路的零状态响应是指在过渡过程开始时,电容 C 两端的电压为零。
A.
正确
B.
错误
【单选题】五字句歌词最常见的有三种结构,其中“青青河边草”的结构是( )。
A.
1+1+3
B.
2+1+2
C.
2+2+1
D.
2+3
【单选题】真核生物呼吸链存在的部位是
A.
细胞质
B.
线粒体
C.
细胞核
D.
微粒体
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