当土壤允许承载力为115kPa时,那么在土壤上允许建筑层数为( )。A.1~2层

题型:单项选择题

问题:

当土壤允许承载力为115kPa时,那么在土壤上允许建筑层数为( )。

A.1~2层

B.2~3层

C.3~4层

D.5~6层

考点:城市规划师城市规划相关知识城市规划相关知识
题型:单项选择题

Tea bag drinking is most Westerners' favorite way of drinking tea. Do you know how it came about?

The tea bag was invented in 1908 by Thomas Sullivan, an American tea seller. He was sending out free tea in silk bags for people to try. People put the bags together with the tea leaves into the cup and added(增加) hot water. The tea tasted good, and people thought it was easy to clean the cup. They were not happy when Sullivan started sending them loose (散的) tea again.

Sullivan realized that he had a hot new thing in his hands, and he built a machine to pack the bags. As tea bags became popular, they were changed from silk to gauze (薄纱) and later paper. In 1952, Lipton Tea made the tea bag even more popular with its invention of the four-sided tea bag. Tea bags were soon a hit in the UK, and today 85%of the tea in the UK is packed in paper bags.

However, many people still prefer loose-leaf tea.  This is because some tea companies put not very good tea in their tea bags. But for most drinkers, tea bags are still the easy and tasly way to go.

小题1:Who invented the tea bag?

A.An English tea seller.

B.Chinese.

C.Lipton.

D.Thomas Sullivan.小题2:The tea in silk bags was welcome because________.

A.the tea in bags was free and very good

B.the tea tasted good and the cup was easy to wash

C.people were happy, with the loose tea

D.people didn't know any better way to enjoy the tea小题3:The material of the tea bags is usually_________now.

A.silk

B.gauze

C.paper

D.plastic小题4:The underlined sentence "Tea bags were soon a hit in the UK" probably means “_______in the UK”.

A.Tea bags soon became popular

B.Tea bags surprised everyone very much

C.Tea bags kicked the loose-leaf tea out of the market

D.Tea bags weren't allowed to be sold小题5:The reading mainly talks about________.

A.the invention of tea

B.the way of drinking tea

C.the history of tea bags

D.people' s favorite tea in the world

题型:单项选择题

受拉杆件横截面积为40mm2,许用应力为250MPa,所能承受的最大载荷是23()。

A.10kN

B.6.25kN

C.0.16kN

D.100kN

题型:单项选择题

石英多晶体多谐振荡器的输出频率取决于()。

A、晶体的固有频率和RC参数

B、晶体的固有频率

C、门电路的传输时间

D、RC参数

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复水器开车建立液面时,接冷却水。

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大体积混凝土施工每层浇筑时间间隔不超过()小时。

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