青少年时期蛋白质供能应占总能量()。 A.10%~12% B.12%~14% C.1

题型:单项选择题 A1/A2型题

问题:

青少年时期蛋白质供能应占总能量()。

A.10%~12%

B.12%~14%

C.16%~18%

D.19%~20%

E.21%~23%

考点:营养(士)不同生理人群营养不同生理人群营养题库
题型:单项选择题 A1/A2型题

空气压缩机附属管线发生爆炸原因是()。

A、润滑油闪点高

B、碳化

C、出口气体温度低

D、出口压力高

题型:单项选择题 A1/A2型题

中午12点,身高为165cm的小冰的影长为55cm,同学小雪此时的影长为60cm,那么小雪的身高为[ ]

A.180cm

B.175cm

C.170cm

D.160cm

题型:单项选择题 A1/A2型题

为提高旋转阳极X线管的短时负荷所采取的措施中,错误的是

A.提高阳极旋转速度

B.加大焦点轨道直径

C.增加阳极倾斜角度

D.加大实际焦点面积

E.减少管电压脉动率

题型:单项选择题 A1/A2型题

阅读理解

    Marriages improve after children grow up and move out,according to an academic study,which suggests

an "empty nest" is not always a bad thing.

    Popular wisdom has it that parents' relationships may suffer once their young fly the coop,because they

feel they have lost their purpose in life.However,a new study by researchers at the University of California,

Berkeley,has found that many couples actually feel happier when their children leave home because they

are able to enjoy spending time together.

    In total,123 American mothers born in the 1930s were tracked for 18 years and asked to rate their

satisfaction levels shortly after marrying,when they were bringing up babies,once their children reached

their teenage years and finally at age 61,when almost all had "empty nests".

    Although not all said they were happier in general,most claimed their marriages had improved since their

children had left home.Researchers believe this is not just because the spouses were spending more time

together,but because they were able to enjoy each other's company more.

    One of the participants in the study,which is published in the journal Psychological Science,said:"Once

the kids grow up...there's some of that stress removed...that responsibility removed,so things are a little

more relaxed."

    Psychologist Sara Gorchoff,who carried out the investigation,said:"The takehome message for couples

with young children is 'hang in there'." Her coauthor Oliver John added:"Don't wait until your kids leave

home to schedule quality time with your partner."

   However,Dr Dorothy Rowe,from the British Psychological Society,said the effects of living in an "empty

nest" will depend on the parents' relationship with their children."If you're just waiting for them to leave

home so you can get on with your life,then of course you'll be pleased to see them go," she said,"But if

you've built your life around your children you'll be terribly lonely.For some parents,their world falls apart

when their children leave."

1.It is commonly believed that________.

A.marriages improve after children leave home

B.an "empty nest" is always a happy thing

C.parents' relationships may suffer once their young grow up and move out

D.parents will be pleased after their children leave home

2.When did many couples feel happier according to the study?

A.At age 61,when almost all had "empty nests".

B.Shortly after marrying.

C.Once their children reached their teenage years.

D.When they were bringing up babies.

3.Marriages improve after children fly the coop not because______.

A.many couples are able to spend time together

B.many couples are able to enjoy each other's company

C.things are a little more relaxed

D.many couples needn't work at all

4.The author of the passage tends to agree that________.

A.parents should build their life around their kids

B.parents should schedule quality time with each other before kids leave home

C.parents' relationship with their kids has no effect on marriages at all

D.parents should be pleased to see their kids leave home

题型:单项选择题 A1/A2型题

费用(成本)类账户的借方登记()。

A. 增加发生额

B. 减少发生额

C. 增加或减少发生额

D. 本期结转数

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