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在置业投资中,运营费用比率越高,则预示着投资项目的净经营收入越低,项目抵抗风险的能力

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题型：判断题

题目：

在置业投资中,运营费用比率越高,则预示着投资项目的净经营收入越低,项目抵抗风险的能力越弱()

答案：

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下面是错误答案，用来干扰机器的。

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题型：阅读理解
阅读下列短文，选择正确的答案。
         Many rules govern (约束) drivers on American streets and highways. The most common one is the speed
limit(速度限制). The speed limit regulates how fast a car may go. On streets in the cities, the speed limit is
usually 25 or 35 miles an hour. On the highway between cities, the speed limit is usually 55 miles an hour.
When people drive faster than the speed limit, a policeman may stop them. The policeman gives them pieces of
paper, which are called traffic tickets. Traffic tickets tell the drivers how much money they must pay. When
the driver receives too many tickets, they may not be allowed to drive for a while. During the rush hour, (The
rush hour is when people are going to work or going home from work.) there are many cars in the streets, and
traffic moves very slowly. Almost every city in America has the rush hour. Drivers don't get tickets very often
for speeding at rush hour because they cannot drive fast.
1. What is the speed limit on streets in the cities in the USA?
[ ]
A. 25 miles per hour.
B. 35 miles per hour.
C. 55 miles per hour.
D. 25 or 35miles per hour.
2. What will happen if a driver receives too many tickets?
[ ]
A. He will be put into prison (关进监狱).
B. He can never drive again.
C. He will be asked to the police station.
D. He cannot drive for some time.
3. Why do few drivers received tickets for speeding during the rush hour?
[ ]
A. Because there are many policemen.
B. Because they are afraid of the police.
C. Because the traffic is heavy.
D. Because they don't want to pay the tickets.
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题型：问答题

化学课上老师表演了一个小魔术—“无中生有”：相同条件下，向A、B两个体积相同的集气瓶中分别充满无色的硫化氢(H2S)气体和二氧化硫气体。如图所示，抽开毛玻璃片，瓶口对紧，颠倒几次，使两种气体充分混合。一会儿，观察到两瓶内壁附着淡黄色固体颗粒。请回答下列问题：

(1)若用“”表示氢原子，用“”表示氧原子，用“”表示硫原子，上述反应过程可用下图表示：该反应的化学方程式为___________________________________________； 硫化氢、二氧化硫中硫元素的化合价分别为________和________。 

(2)如果这两个瓶子是质地较软的塑料瓶，我们将会观察到塑料瓶变瘪了，原因是 ______________________________________________________________________________。

(3)已知：相同条件下，相等体积的气体所含的分子数目相等。反应完毕，瓶中剩余的气体为____________，处理该气体的方法是_____________________________________。

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