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普通热处理的工艺有 、 、 和回火。其中 和 常用于预备热处理; 和 用于最终热处理。
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【简答题】2010年8月8日凌晨，甘肃省舟曲县发生重大泥石流灾害。读下图回答问题。 （1）图中A地和B地比较，哪个地方更容易发生泥石流？说明理由。 ______________________________________________________________________________ （2）当泥石流发生时，在泥石流的流经区和堆积区的人员应如何逃生？ ___________________...
【单选题】What does the report of British Future show?
A.
British people believe only natives can enjoy the British welfare
B.
British people know that the immigrants make great contributions
C.
Some British people worry that immigrants may not follow the rules
D.
Most British people are tolerant of those immigrants born abroad
【单选题】What does the first paragraph tell us?
A.
A) American universities enroll more students than before.
B.
It is not easy to get a place in a good 's program.
C.
Competition is much tougher than before at college.
D.
Americans don't want to work as teachers or administrators.
【单选题】If an art critic has a very ________ political or religious point of view, this can overrun other considerations in judgments about art and give a bias to the description or interpretation made.
A.
sensitive
B.
decided
C.
wavering
D.
overcoming
【简答题】当膀胱充盈时在__________上缘进行膀胱穿刺,穿刺针可不经______
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