人类建颌过程是从（） A.恒切牙萌出时开始直到第三磨牙萌出才完成 B.乳牙萌出时开始

与氨氯地平的结构特点不符的是（）

A.含有邻氯苯基

B.含有邻硝基苯

C.含有二氢吡啶环

D.含有双酯结构

E.含有手性中心

原发性肝癌肝区疼痛特点是（）

A.间歇性隐痛

B.持续性胀痛

C.阵发性绞痛

D.刀割样疼痛

E.烧灼样疼痛

数控机床中的半闭环控制系统与闭环控制系统在结构上主要区别是( )。

A．半闭环控制系统没有位置检测反馈装置，而闭环控制系统具有位置检测反馈装置

B．半闭环控制系统采用直流伺服电动机作执行器，闭环控制系统采用交流伺服电机

C．半闭环控制系统的位置检测器安装在电动机轴端或丝杠轴端，闭环控制系统的位置检测器安装在工作台上

D．半闭环控制系统的速度检测器安装在电动机轴上，闭环控制系统的速度检测器安装在工作台上

The booking notes of the play "the Age of Innocence":

Price: $10

BOOKING

There are four easy ways to book seats for performance:

------ in person

The Box Office is open Monday to Saturday, 10 a. m. -8 p. m.

-----by telephone

Ring 01324976 to reserve your tickets or to pay by credit card(Visa, MasterCard and Amex

accepted)

------ by post

Simply complete the booking form and return it to Global Theatre Box Office.

------on line

Complete the on-line booking form at www. Satanfiedtheatre. com

DISCOUNTS:

Saver: $2 off any seat booked any time in advance for performances from Monday to Thursday.

Savers are available for children up to 16 years old, over 60s and full-time students.

Supersaver: half-price seats are available for people with disabilities and one companion. It is advisable to book in advance. There is a maximum of eight wheelchair spaces available and one wheelchair space will be held until an hour before the show.

Standby: best available seats are on sale for $6 from one hour before the performance for people eligible(suitable)for Saver and Supersaver discounts and thirty minutes before for all other customers.

Group Bookings: there is a ten percent discount for parties of twelve or more.

School: school parties of ten or more can book $6 standby tickets in advance and will get every tenth ticket free.

Please note: we are unable to exchange tickets or refund money unless a performance is cancelled due to unforeseen circumstances. 

小题1:If you want to book a ticket, you CANNOT ________.

A．use the Internet.

B．ring the booking number and pay for the tickets by credit card.

C．go to the Box Office on Sundays.

D．complete a booking form and post it to the Box Office.小题2:According to the notes, who can get $2 off?

A．A 20-year-old full-time college student.

B．A 55-year-old woman.

C．An 18-year-old teenager.

D．The people who book the tickets on Fridays.小题3:If you make a group booking for a group of 14 adults, how much should you pay?

A．$120

B．$126

C．$140

D．$150小题4:From the passage we can know all the following information except that ________.                             

A．There are only 8 wheelchair spaces in the theatre.

B．The audience can't refund money if the performance is on show.

C．A group of 12 persons can get 10 percent discount.

D．A school party of 15 students should pay $90 for the standby tickets.

消除爆炸性煤尘的积聚的措施有（）等。

A.撒布岩粉

B.清扫煤尘

C.冲洗

D.刷浆

E.喷雾和通风