操作升降机时，（）。A、要强拉猛提钻具 B、禁止强拉猛提钻具 C、见机行事 D、快速提钻

Here is my idea about how a friend is like. Firstly, 61.______a friend is someone you can share your secrets. If you 62.______tell him a secret, never will he talks about it with anybody 63.______else. Besides, a friend is always good listener when you 64.______need one. After hear your sad stories, he will say some 65.______words that is nice and warm. Still, your happiness makes 66.______him happily, too. What’s more, a good friend is willing to 67.______offer the help to which you need, or can at least give you 68.______some advices. In a word, friends are those you like and 69.______trust, and you will enjoy every minute that you spent with 70.______them.

61().

肝功能试验不包括（）。

A.全血细胞减少

B.凝血时间延长

C.转氨酶升高

D.白蛋白下降

E.Ⅲ型前胶原氨基末端肽上升

What is distance learning It means that you study on your own, at home or wherever suits you. Recently, the world famous Open University in the United Kingdom has designed a new style of distance learning, which is called (1) . The phrase "Open Learning" means you study (2) . You read course material, work on course activities, and write (3) . The word "Supported" means you have help (4) , the student services staff at regional centres, and centralized areas such as (5) . You can also contact other students through tutorials and (6) , the University’s online conferencing system, and events and clubs organized by (7) . Most distance learning courses use printed paper materials. They also include some (8) materials such as a CD, DVD or video. Many courses have a web site and an (9) . You’ll need access to a computer (10) to make use of these. The Open University can help its students buy a computer and (11) the cost of accessing the Internet.

With most distance learning courses, no (12) are required to study. of course, you have to be aged 18 when your course starts but there is no (13) . Currently the Open University has around (14) undergraduate and more than 30,000 postgraduate students, of which 10,000 have (15) . Nearly all students are studying (16) . About 70 per cent of undergraduate students are in (17) . More than 50,000 students (18) by their employers for their studies. Most distance learning courses (19) . Some of them are even available in other parts of the world. With over 25,000 of its students living outside the UK, the Open University is the (20) that offers distance learning throughout the world.

16（）

解释一下信息安全技术中“防火墙”的概念？

保证保险贷款业务逾期率超过（）或承保保险公司赔付率达到（）时，立即停办此项业务。

A.5%；100%

B.5%；130%

C.10%；120%

D.10%；100%