固体和液体很难被压缩，这是由于分子间存在着______________。

决定化学物质毒性大小最主要的因素是（）。

A.接触途径

B.剂量

C.接触时间

D.接触速率和频率

E.接触期限

银行汇票丧失，持票人可凭（）出具的其享有票据权利的证明，向签发银行请求付款或退款。

A.公安部门

B.中国人民银行

C.人民法院

D.本单位

Riding School：

You can start horse—riding at any age．Choose private or group lessons any weekday

between  9 a．m．and 8：30 P．m．(3：30 p．m．on Saturdays)．There are 10 kilometers of tracks and paths for leisurely rides across farmland and open country．You will need a riding hat．

Opening Hours：Monday through Friday：9：00 a．m．—8：30 p．m．

Phone：(412)396—6754  Fax：(412)396—6752

Sailing Club：

Our Young Sailor’s Course leads to the Stage 1 Sailing qualification．You’ll learn how to sail safely and the course also covers sailing theory and first aid．Have fun with other course members , afterwards in the clubroom．There are 10 weekly two-hour 1essons (Tuesdays 6 p．m．～8 p．m．)．   

Opening Hours：Tuesdays：6：00 p．m．—8：00 p．m．

Phone：(412)396—6644 Fax：(412)396—6644

Diving Centre： Our experienced instructors offer one-month courses in deep-sea diving for beginners．There are two evening lessons a week，in which you learn to breathe underwater and use the equipment safely．You only need  swimming costume and towel．Reduced rates for couples．

Opening Hours：Monday and Friday：6：30 p．m．—8：30 p．m．

Phone：(412)396—6312  Fax：(412)396—6706

Medical Center：

The staff of the Medical Center aim to provide convenient and comprehensive medical care to students and staff of the university．The center is well equipped and the staff here are trained to deal with a broad range of medical problems．Both female and male doctors as well as nursing staff are available for consultation．Also，all kinds of medicines are sold here and are cheaper for students than other drugstores．

Opening Hours：24 hours from Monday to Sunday

Phone：(412)396--6649  Fax：(412)396—6648

Watersports Club：

We use a two-kilometer length of river for speedboat racing，and water-skiing，A beginners’course consists of ten 20-minute lessons．You will learn to handle boats safely and confidently，but must be able to swim．The club is in a convenient central position and is open daily from 9 a．m to 4 p．m，with lessons all through the day．

Opening Hours：Monday through Friday：9：00 a．m．—4：00 p．m．

Phone: (412)396—6899  Fax396—6890

小题1:If you want to swim and enjoy activities which are fast and a bit dangerous，you should join ________ ．

A．Diving Centre

B．Riding School

C．Watersports Club

D．Sailing Club小题2:If you want to experience a new activity in the countryside in the mornings，you may fax _____________________________ ．

A．(412)396—6752

B．(412)396—6648

C． (412)396—6876

D．(412)396—6706小题3:If you are planning to explore the ocean depths．you should attend your lessons at ______ .

A．Monday through Friday：7：00 a．m．—10：00 p．m．

B．24 hour from Monday to Sunday

C．Tuesdays：6：00 p．m．—8：00 p．m．

D．Monday and Friday：6：30 p．m．—8：30 p．m．小题4:You want to do an activity one evening a week and get a certificate in the end，you can go to __________________________．

A．Diving Center

B．Sailing Club

C．Riding School

D．Watersports Club小题5:Which is NOT the convenience that the Medical Center provides?

A．Well trained staff members．

B．Nursery for newly-born babies.

C．Good equipment．

D．Various less expensive medicines．

钻循环检测油气上窜速度，油气上窜速度计算公式采用“迟到时间法”，满足（）条件之一才能起钻。

A、起下一趟钻需要的时间（小时）+10小时<油气上窜到井口的时间（小时）

B、10小时<油气上窜到井口的时间

C、在一趟起下钻时间内油气上窜距井口1000m以上

D、在一趟起下钻时间内油气上窜距井口500m以下

E、在一趟起下钻时间内油气上窜距井口1000m以下

干燥指利用热能除去含湿的（）或膏状物中所含的（）或其他溶剂，获得干燥物品的工艺操作。