在投球分层压裂施工中,中原油田常用的投球器一次所容()个球。A.270 B.250

题型:单项选择题

问题:

在投球分层压裂施工中,中原油田常用的投球器一次所容()个球。

A.270

B.250

C.300

D.280

考点:压裂操作工中级压裂操作工中级压裂操作工题库
题型:单项选择题

(以下2题共用备选答案)

检查羊水,结果是提示胎儿肺成熟

A.卵磷脂/鞘磷脂比值为2.3
B.淀粉酶值为500U/L
C.胆红素类物质值为0.01
D.含脂肪细胞出现率为23%
E.肌酐值为2.3mg%

题型:单项选择题

Blogs (博客) are the place where young people go to reveal their souls, to vent(发泄), and even to gossip.
Many people enjoy the freedom in blogging. Some, however, find that putting one’s life online can have a price. Some students in America got suspensions (暂停) because on their blogs they posted threatening words to their teachers.
Recent surveys found that nearly a fifth of teens who have access to the Web have their own blogs. And 38% of teens say they read other people’s blogs. By comparison, about a tenth of adults have their own blogs and a quarter say they read other people’s online journals.
With the development of the Internet, more and more people will be engaged in blogging.
In another survey, 79% of teens agreed that people at their age aren’t careful enough when giving out information about themselves online. Besides, careless blogging can also affect blog viewers. When you are angry or frustrated, your blog is the first place you turn to. The words you post then may not be rational which you may regret later. To minimize (减少) the negative effect, change the permission setting and make such posts “private” so that only you can read them.
As long as you are careful with what you post, blogging is a great means of staying in touch with friends and displaying one’s creative works.
68. Blogs are the place where people _________.
A. go online to have a chat                 B. go online to enjoy freedom
C. go online to express themselves freely      D. exchange their views online
69. The fact that some American students got suspensions is used to show that ________.
A. people should be careful with what they write
B. people should not put their life online
C. American students are limited in blogging
D. anyone who has access to the Web has his blog

20070212

 
70. The underline word “rational” in the fifth paragraph probably means _________.

       A. strange                 B. perfect                  C. helpful                 D. reasonable
71. The passage is mainly about _________.
A. the number of people who have blogs    B. the use people make of blogs
C. advantages and disadvantages of blogs      D. the author’s suggestions about blogging
题型:单项选择题

计算机网络的目标是实现

A) 数据处理和文献检索
B) 文献检索和资源共享
C) 资源共享和快速通信
D) 快速通信和数据处理

题型:单项选择题

当CSD人工脱开电门复位后,如何复位()。

A.P5板上人工脱开电门复位

B.CSD故障消失后,自动复位

C.拉出CSD上的复位手柄

D.无法复位,需更换CSD

题型:单项选择题

下滑信标的频率范围是()。

A.329.00MHz—339.00MHz

B.325.00MHz—335.00MHz

C.325.00MHz—339.00MHz

D.329.00MHz—335.00MHz

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