炎热的夏天,当你走到晒得发烫的柏油马路上时,刚巧来了辆洒水车,洒湿了路面,这时你

题型:选择题

问题:

炎热的夏天,当你走到晒得发烫的柏油马路上时,刚巧来了辆洒水车,洒湿了路面,这时你会感到更加闷热,产生这种感觉的主要原因是(  )

A.洒水车中的水经过爆晒,温度很高

B.地面上的水反射了阳光,使身体得到了更多的热量

C.洒水后空气的湿度增大,身上的汗较难蒸发

D.水蒸发时把地面的热带到了人的身上

考点:蒸发及影响蒸发快慢的因素
题型:选择题

When tea and coffee were first introduced to Europe in the 18th century, people had different ideas about their use.Some said that tea and coffee were harmful to humans and they could cause (引起)people to die.

In Sweden(瑞典), King Gustaf Ⅲ decided to find out whether or not this was true.It happened that there were two brothers in prison at that time.They were twins and were almost alike in every way.They had both been sentenced to death (判处死刑).The King decided to let them live if one of the men agreed to drink several cups of tea each day and the other several cups of coffee.

Both brothers lived many years without problems of any kind.At last,the brother who had drunk tea every day died at the age of 83,the other died a few years later.

Because of the experiment(实验), tea and coffee got accepted (接受) and became popular as drink in Sweden, and it is one of the many countries of the world where much tea and coffee is drunk today.

小题1:Tea and coffee were first introducd to Europe in_______.

A.the eighteenth century

B.the eighteen century

C.eighteenth centuries

D.eighteen centuries小题2:What does the word harmful mean in Chinese?---It means________.

A.有趣的

B.苦涩无味的

C.有害的

D.可口的小题3: The brother who had drunk tea every day lived______.

A.until he was over 83

B.until he was 83

C.until the other had been dead for several years

D.until he had drunk tea for a few years小题4:. Today the Swedish drink_________.

A.much more coffee than tea

B.much tea and coffee

C.little tea and coffee

D.much tea but little coffee

题型:选择题

下列使用电梯的事项,哪项不正确?()

A.按安全警示标志操作 

B.7岁以下儿童可以独立使用电梯 

C.未经管理人员许可,不得使用载人电梯运载货物

题型:选择题

若药物在胃、小肠吸收,在大肠也有一定吸收,可考虑制成多少时间服一次的缓控释制剂( )。

A.8小时
B.6小时
C.24小时
D.48小时
E.36小时

题型:选择题

农村妇代会主任的经济报酬应()范围。

A.纳入村干部生活津贴

B.进入乡镇政府预算

C.由上级主管部门下拨

D.都不准确

题型:选择题

发电机不宜进相运行,主要是因为进相时发电机的()。

A.端电压升高

B.稳定性较差

C.转子发热

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