[单项选择]For many years marine centrifuges were designed for （） operation, that is the machines were run for a period during which solids accumulated in the bowlThe machine was stopped when the accumulated solids began to impair its performance.
A. purifying
B. batch
C. long period
D. temporary

[单项选择]What’s the attitude of many old senior officers for a minor fire?（）
A. They would like to call out all hands out for it
B. They would rather handle themselves, then call out all hands
C. They prefer to put it out by themselves
D. They think it is difficulty to call out all hands for a minor fire

[单项选择]During these ten years, many new methods have been（）in the field of foreign language teaching.
A. adopted
B. adapted
C. alarmed
D. aided

[单项选择]There were many people present and he appeared only for a few seconds, so I only caught a （）of him.
A. glance
B. glimpse
C. look
D. sight

[单项选择]How many years of experience do you have managing and maintaining a Windows Server 2003 environment? （）
A. I have not done this yet.
B. Less than 3 months
C. 3-6 months
D. More than 6 months but less than 1 year
E. 1-2 years
F. 2-3 years

[单项选择]How many years of experience do you have using any version of Windows Server? （）
A. None
B. Less than 3 months
C. 3-6 months
D. More than 6 months but less than 1 year
E. 1-2 years
F. 2-3 years
G. 3-4 years

[单项选择] Research Is a State of Mind For many years there has been much misunderstanding as to just what research is. The popular conception seems to be that there is something mysterious about it， and before any research can be done it is necessary to have expensive scientific apparatus and large， elaborately equipped laboratories. Actually， this is not so. （6） It is a simple， organized way of trying to accomplish something you wish to do—so simple that anyone can do research anywhere at any time. First， you select the problem you would like to solve， then you list at least ten reasons why it has not been solved. （7） It takes just as much effort to solve a useless problem as a useful one. （8） After carefully—and I want to emphasize that word “carefully”—selecting the problem and the ten things between you and the solution， you then use the same procedure as in solving a crossword puzzle.（9）In the solution of the remaining obstacles you may need some simple apparatus， but the things you will probably need most are infinite patience and persistence. Few people realize the difficulties of doing any new thing. Maybe one of the reasons people are so easily discouraged is because of their education. During all our years at school we were examined two or three times a year. If we failed once， we were out. （10）If we are going to make progress， we must learn to fail intelligently so that we won't become discouraged at the 99.9 per cent failure. 6.（）
A. Make sure the game is worth the candle.
B. That is a step in the right direction， but I don't believe it is enough.
C. You take the easy obstacles first and by a process of elimination you eventually arrive at the one or two major ones.
D. But in selecting the problem， you need to be sure to analyze it carefully to see that it is worth the effort.
E. Research isn't a physical thing at all； it's a state of mind.
F. By contrast， all research work is 99. 9 per cent failure and， if we succeed once， we are in.

[单项选择]How many years of experience do you have with deploying and maintaining a virtualization infrastructure using Microsoft desktop or server virtualization technologies?（）
A. I have not done this yet.
B. Less than 6 months
C. More than 6 months but less than 1 year
D. 1-2 years
E. 2-3 years
F. More than 3 years

[单项选择]Electricity （） by the Greeks a good many years ago.
A. was first found
B. was first discovered
C. has first been discovered
D. was seen first

[单项选择]Radio communication（）for many years and helps to save tens of thousands of lives.
A. has been used
B. have been used
C. has used
D. have used

[单项选择]（）for many years，the AB passed the examination and became an officer.
A. Having ignored him
B. To have been ignored
C. To be ignored
D. Having been ignored

[单项选择]He has smoked for so many years that he can（）give it up
A. directly  
B. mostly
C. exactly 
D. hardly

[单项选择]Most marine biological sewage treatment plants consist of all the following statements except （）.
A. aeration tanks
B. settling tanks
C. disinfection agent
D. anaerobic bacteria

[单项选择]Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
A. cylinder liners and piston rings
B. main bearings
C. crankpin bearings
D. turboblower

[单项选择]Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is（）
A. entirely constant pressure
B. entirely constant temperature
C. a combination of constant volume and constant pressure
D. a combination of constant temperature and constant pressure