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【单选题】
由 PNP 晶体管组成的基本放大电路,如下图: 如出现了饱和失真,则为了消除这种失真,应______________A.
减小集电极电阻
B.
改换 小的管子
C.
增大基极偏置电阻R b
D.
减小基极偏置电阻R b
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【单选题】What does the talk tell us?
A.
How to settle the consumer's complaint about a faulty item.
B.
How to make an effective complaint about a faulty item.
C.
How to avoid buying a faulty item.
D.
How to deal with complaints from consumers.
【单选题】What does the news item mainly talk about?
A.
Tony Blair doesn't regret helping the US to remove the Iraqi leader Saddam Hussein.
B.
Tony Blair does regret helping the US to remove the Iraqi leader Saddam Hussein.
C.
Tony Blair didn't plan to help the US to remove the Iraqi leader Saddam Hussein.
D.
Tony Blair didn't help the US to remove the Iraqi leader Saddam Hussein.
【单选题】What is the main idea of me news item?
A.
US concern over the forthcoming peace talks.
B.
Peace efforts by the Palestinian Authority.
C.
Recommendations by the Mitchell Commission.
D.
Bomb attacks aimed at Israeli civilians.
【简答题】隔热防护服主要保护消防员躯体及四肢不受火焰、蒸汽烫伤。()
【单选题】听力原文：Our lost-and-found system allows you to notify us if you lose an item while riding Metro. Once you submit information on the item, a search is done of the items we have found.If there is a match,...
A.
When the person is on the subway.
B.
When the person comes to the office in person.
C.
When the office finds a match for the item lost.
D.
When the office finishes the search for the item lost.
【单选题】_____ our earth, otherwise it will be no longer fit for us to live on.A．Protected B．To protect C
A.
31. _____ our earth, otherwise it will be no longer fit for us to live on. A．Protected
B.
To protect
C.
Protecting
D.
Protect
【简答题】麦克卢汉擅长用类比或者暗喻的方法提出思想。比如,它曾说过:电子技术使人相互依存的新局面以( )的形象重新塑造这个世界。
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