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【简答题】
Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once. cluster imprison offset ambiguity globalize stubborn compulsory contemplate console groan 1. Although secondary education is __________ , parents are not required to send their children to state schools . 2. The economic situation has been worsening , causing economists to __________ whether the present policies are sustainable . 3. He was found guilty and was __________ in the Tower of London , where he died very quickly , aged only 47 . 4. It is obvious that the future of the Internet is to __________ more and more areas of the world , and that e-commerce and e-entertainment are going to go for more and more markets . 5. However , your current losses should soon be __________ by gains ; the fund will produce a positive return of 11.6 percent over a nine-month period . 6. Because she was so tall and alim , all the clothes looked marvelous on her and the other girls would __________ their envy . 7. This can be a helpful approach in discussion-someone may regard you as __________ since you never want to change your mind , whereas you see yourself as determined . 8. On weekends , the school parking lot is almost empty except that a few cars __________ near the entrance . 9. In the photographer’s finest pictures there is also a degree of __________ , which allows them to be interpreted in a variety of ways . 10. Tim stretched out a hand in apology for his thoughtless remarks and was __________ by a firm handshake from Mark .
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【单选题】薄层色谱法造成斑点拖尾现象的可能原因不包括下列哪项( )
A.
点样量过大
B.
两种极性相近的物质未分开
C.
被分离化合物是弱酸或弱碱
D.
被分离化合物是中性物质
【单选题】It is the third year ____ that he keeps buying milk in glass bottles instead of plastic bottles.
A.
one by one
B.
one after another
C.
in a row
D.
in turn
【单选题】It is the third year that he______ in this rented studio.
A.
has worked
B.
is working
C.
works
D.
worked
【单选题】为减少蒸汽中硅酸盐的含量,在运行中锅水应呈碱性,且其PH值最好维持在( )范围内。
A.
5-6
B.
11-15
C.
9-10
【单选题】For Ethiopia and Sudan, it is the second bad year _______ (and the third bad year in four).
A.
in turn
B.
in time
C.
in a row
D.
in the end
【简答题】为减少蒸汽中硅酸盐的含量,在运行中锅水应呈碱性,且其PH值最好维持在()范围内。
【单选题】以下关于金属材料硬度检测的说法中错误的是( )
A.
在采用布氏硬度法进行硬度测量时,布氏硬度值在450以下时,采用淬硬钢球压头;布氏硬度值在650以下时,则采用硬质合金压头
B.
洛氏硬度原理和布氏硬度原理相似,布氏硬度检测时是通过测量钢球所压出的压痕直径来判断出其硬度数值,而洛氏硬度则是通过测量锥体压出的压痕深度
C.
洛氏硬度法测量时所测硬度值重复性优,分散度小,测量时只需取零件表面上的某一点进行检测
D.
维氏硬度法检测时实验载荷可以很小,压痕也较小
【单选题】It is the third time that he ____ abroad on business this year.
A.
goes
B.
went
C.
has gone
D.
go
【简答题】为减少蒸汽中硅酸盐的含量,在运行中锅水应呈(),且其PH值最好维持在()范围内。
【单选题】为减少蒸汽中硅酸盐的含量,在运行中锅水应呈()
A.
酸性
B.
碱性
C.
中性
D.
无关
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