原兑换未用完的人民币兑回外汇原兑换水单的兑回有效期为自兑换日起（）个月。A.6 B.

在V5接口协议中，下列（）协议在主次链路中都存在。

A、PSTN协议；

B、控制协议；

C、保护协议；

D、链路控制协议。

商业银行内部监督部门应向( )提供独立的综合理财业务风险管理评估报告。

A．董事会和高级管理层

B．对中国银监会

C．中国人民银行

D．中国银行业协会

一般轧辊的辊头的作用是（）。

A．便于吊装

B．传递扭矩

C．安装轴承座

认真阅读下列短文,根据所读内容在文章后的表格中填入恰当的单词。

注意:表格中的每个空格只填1个词.。

     Autumn blues Let the sunshine in falling leaves,withering flowers,cold winds,and faint sunshine.

For many people late autumn can be a season of gloom and depression.Spirits can be low.

     People who suffer from "the autumn blues" often are extremely exhausted,lack energy,need

more sleep,feel  increased appetite and gain weight.

     "The exact cause of this condition,often called seasonal depression or seasonal affective disorder

(SAD),is not known yet," says Chen Jue,associate professor at Shanghai Mental Health Center."But

recent studies indicate that weather change is influential and strongly suggest that this condition is

caused by changes in the availability of sunlight."

      One theory is that with decreased exposure to sunlight,the biological clock that regulates mood,

sleep,and hormones is delayed,running more slowly in winter.Exposure to light may reset the biological

clock.

     Another theory is that brain chemicals that transmit information between nerves may be altered in

individuals with SAD.It is believed that exposure to light can correct these imbalances.

     "It is a sad season,but you can try to make it happy.Remember,spring always lives in your heart,"

Chen says.

      Here are some tips to deal with autumn depression.

     -Go outdoors and get some sunlight.Move around.Fresh air and exercise improve the respiratory

(呼吸) system and blood circulation and regulate the nervous system.Thus,exercise is calming and

relieves one's mood.

     -Relax at work.Stretch,breathe deeply.Take a tea break.Think of your next vacation.

     -Keep a chocolate bar in your pocket.Chocolate and sugar raise the spirits. 

     -Look at bright colors,such as red and orange.Color therapy improves mood. 

     -Listen to your favorite music.You can dance to it,or just lie on a cozy couch,reading a novel. 

     -Decorate your room and work space with flowers.Blooming plants are cheering.

     -Call friends or family when you feel lonely or depressed.Recall some happy memories.

井巷通风能力不足时应采取哪些技术措施？