整体模造型适用于什么铸件?() A.最大截面在中间,形状较复杂的铸件 B.最大截面在

题型:单项选择题

问题:

整体模造型适用于什么铸件?()

A.最大截面在中间,形状较复杂的铸件

B.最大截面在一端,形状较简单的铸件

C.最大截面在两端,高度较大的铸件

考点:机械工程铸造工艺学铸造工艺学题库
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“风险”一词与人类的决策和行为后果联系越来越紧密。股票投资的风险源于[ ]

①股票交易次数的不确定性

②企业利润的不确定性

③股东人数的不确定性

④股票价格波动的不确定性

A.①②

B.①③

C.②④

D.③④

题型:单项选择题

生态住宅:是指运用生态学原理和遵循生态平衡及可持续发展的原则,设计、组织内外空间中的各种物质因素,使物质、能源在建筑系统内有秩序的循环转换,从而获得一种高效、低耗、无污染、生态平衡的建筑环境。
根据上述定义,下列不属于生态住宅的是( )。

A.某住宅区统一安装智能系统,实现太阳能和常规供热恒温调控
B.某家装修时,用了集水槽将雨水引至住宅的中央水池以供利用
C.某市商务区的办公大楼屋顶种植花草,增强大楼的隔热保温功能
D.某小区对垃圾进行分类存放、及时清运,以提高垃圾的循环利用

题型:单项选择题

阅读理解.

     The rise of the socalled "boomerang generation (回巢族)" is reported in official figures

showing that almost one in five graduates in their late 20s now live with their parents.By

contrast,only one in eight university graduates had failed to fly the nest by the same age 20

years ago,research from the Office for National Statistics (ONS) shows.

     It also found that grownup sons are twice as likely as their sisters to still be living with

their parents in their late 20s.

     With nearly a quarter of men approaching 30 still living at home,the findings are bound

to lead to the claim of a "generation of mummy's boys".

     Rising housing prices,increasing student debts and the effects of depression on the job

market have forced a wave of young people to move back into the family home at an age

when they would normally________.

     Young professionals in their late 20s or early 30s have been called the "boomerang

generation" because of the trend toward returning to the family home.

Recent research has suggested that young people in Britain are twice likely to choose to

live with their parents in their late 20s than their counterparts elsewhere in Europe.

     But_experts_warned_that_the_phenomenon_may_have_more_to_do_with_young_

people_facing_dark_future_than_simply_a_desire_to_save_money.

     While the percentage of those of university or college age moving out from the family

home has continued to rise in the last 20 years,among those in their mid and late 20s the

trend has reversed.

     Overall 1.7 million people aged from 22 to 29 now share a roof with their parents,including

more than 760,000 in their late 20s,the ONS figures suggest.

1.What is the main idea of the passage?(Please answer within 15 words.)

________________________________________________________________________

2.Which sentence in the passage can be replaced by the following one?

The survey showed that the number of young men living in the family home probably doubles

that of young women in their late 20s.

________________________________________________________________________

3.Fill in the blank in the fourth paragraph with proper words or phrases to complete the

sentence.(Please answer within 5 words.)

________________________________________________________________________

4.List three factors that have driven young people back home again based on the

passage.(Please answer within 5 words each.)

①________________________________________________________________________

②________________________________________________________________________

③________________________________________________________________________

5.Translate the underlined sentence in the seventh paragraph into Chinese.

________________________________________________________________________

题型:单项选择题

关于Ig的描述,正确的是()

A.可被胃蛋白酶水解成Fab和Fc段

B.IgD构成的免疫复合物通过Clq激活补体

C.IgM中含分泌片

D.Ig有K和λ两类重链

E.具有抗原性

题型:单项选择题

2010年浙江省的()与广东丹霞山等六地被正式列入世界自然遗产名录。

A.永康方岩

B.雁荡山

C.江郎山

D.天目山

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