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【单选题】
听力原文： The world’s No. 3 record company, EMI became the first major music company to sell a large selection of its recordings on line on Tuesday. It related more than 100 albums and 40 singles from acts of famous singers of various styles for fans to download from their computers. EMI’S downloading trial came as Legal battles rage over copyrights and digital music distribution between the re-cording industry and online music providers like MP3. con, Inc.. MP3. com provides access to music via the popular MP3 technology, a compression format that tunas music on compact discs into small computer fibres. EMI’S music will be available in the future in secure format, after the company develops a player that supports the format.Gurrent MP3 technology allows fans to copy songs again and again, the encoded software being used by EMI will limit consumers from hard drives. A consumer can turn the song to a CD twice and send it to a portable device three times. EMI is______.A.
the world's first major music company
B.
the world’s third largest record company
C.
the world’s largest on-line music provider
D.
the world’s largest software company
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举一反三
【单选题】有关电泳的论述正确的是
A.
带电离子向所带电荷相同的方向移动的现象称为电泳
B.
电泳技术主要用于大分子物质的分离及蛋白质、核酸等生物分子研究
C.
电泳方法的应用局限性在于设备昂贵、操作复杂
D.
按电泳的原理有区带电泳、稳态电泳、置换电泳三种形式
E.
产生电泳的三大要素是电场、带电粒子和促使带电粒子移动的介质
【简答题】普通钢和优质钢是按其强度等级来区分的。
【单选题】Page 103 Task 2 Choose the sentence that best expresses the meaning of the sentence from the text. I feel as if I’m always dragging my wayward brain back to the text.
A.
I feel as if I am so immersed in the text that nothing can tear me away.
B.
I feel as if the text is virtually incomprehensible to me.
C.
I feel as if I have lost my ability to do critical thinking about the text.
D.
I feel as if I am constantly struggling to concentrate on the text.
【简答题】普通钢和优质钢是按其强度等级来区分的。
【单选题】It doesn’t astonish us that the administration now appears so heel-dragging over this issue. The underlined word “heel-dragging” probably means ( ).
A.
indecisive
B.
unscrupulous
C.
meticulous
D.
susceptible
【简答题】带电离子的产生主要有碰撞游离、 、 、表面游离等方式。
【单选题】在实际施工中，因各种因素的影响，使井内压力平衡遭到破坏而导致出现溢流，甚至可能发生井喷。这时就需要井控设备实施压井作业，重新恢复对油气井的压力控制。这是第（）级井控
A.
一
B.
二
C.
三
D.
四
【单选题】___ allows you to click at the beginning and end of text that you want to highlight instead of holding the mouse button down while dragging over the text.
A.
SelectLock
B.
HighlightLock
C.
Teock
D.
ClickLock
【简答题】带电离子的产生主要有碰撞电离、热电离、______、表面电离等4种方式。
【简答题】调心球轴承 1205 的径向基本额定动载荷 C r =9500N, 说明此种轴承在承受径向载荷 _____________N 时,基本额定寿命为 10 6 r ,可靠度为 ________% 。
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