煤的元素分析成分包括（）氢、氮、硫等7种。A、碳 B、氧 C、灰分 D、水分 E、挥

SDH信号最基本的同步传输模块的速率为：（）帧/秒×9行/帧×270字节/行×8比特/字节

关于乙苯精馏塔回流泵出口物料去向，下列说法正确的是（）。

A.回流至乙苯精馏塔

B.作为吸收剂补充至脱丙烯系统

C.作为合格产品去罐区

D.作为合格原料去苯乙烯单元

Energy pod:

It was designed by a US company with NASA technology. It puts the human body in the best sleeping position and blocks outside noise to create an ideal napping experience. Silicon Valley high-tech companies such as Google provide the Pod for employees.

White noise radio:

White noise is a sound signal that contains equal power and frequency. Some radios provide white noise to mask other noises so that people can sleep without disturbance.

High-tech sleepwear:

A US-based company designs a nightgown with special fabric that stimulates blood flow to tired muscles helping one relax in deeper restorative sleep.

Emu pillow:

Inspired by emu that buried its head in sands when it’s scared, a type of pillow has been designed in China for office workers to take a nap, safe and sound. It turns the computer desk into a sleep hub with even two pockets to store the hands.

小题1:These are designed for those who   .

A．have enough sleep.

B．are working for high-tech companies.

C．are in poor health.

D．are victims of sleeping sickness.小题2:Which of the following is produced with the help of a kind of bird?

A．White noise radio.

B．Emu pillow.

C．High-tech sleepwear.

D．Energy Pod.小题3:How do you probably get the information?

A．From a book.

B．From a radio program.

C．From a newspaper.

D．From a text message.

面神经炎的特点下列哪项表述是错误的

A．临床特征为一侧面部表情肌突然瘫痪

B．常为单侧

C．20～50岁最多见，女性多于男性

D．贝耳征阳性

E．病侧舌前2/3味觉丧失

某A股的股权登记日收盘价格为30元每股，送配股方案每10股配5股，配股价格为每股10元，那么该股票的除权价格为( )元。

A．17

B．21

C．17.5

D．21.5