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【单选题】
关于铣削铜的铣刀，说法正确的是（）A.
采用高速钢铣刀前角要小
B.
采用钨钴类硬质合金铣刀，前角应大一些
C.
采用刀具的前后面粗糙度可选大一些
D.
铣刀的切削刃一定要锋利，前面最好磨出大圆弧卷屑槽
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举一反三
【单选题】Geniuses took at problems in many different ways. Genius often comes from finding a new perspective that no one else has taken, Leonardo da Vinci believed that, to gain knowledge about the form. of a ...
A.
referred to numerous books
B.
made use of drawings and graphs
C.
compared it with many other problems
D.
approached it from different angles
【单选题】By citing Newton, the author intends to convey the idea that______.
A.
heroic geniuses are usually quite modest
B.
the act of discovery is complex and difficult to describe
C.
the story of a single genius is often inspiring
D.
discovery is always the result of collective wisdom
【简答题】学生掌握的知识越多，智力发展水平就越高．（ ）
【单选题】下列关于血脂的叙述不正确的是( )。
A.
人群血清总胆固醇水平与冠心病的发病率和死亡率成正比
B.
低密度脂蛋白胆固醇为粥样斑块中胆固醇的主要来源
C.
高 密度脂蛋白胆固醇与冠心病的发生呈正相关
D.
血清胆固醇水平升高的年龄越早，以后发生冠心病的机会越多
【单选题】Those who are often hailed by their colleagues as “geniuses” are usually ______.
A.
good at accessing their imaginations
B.
good with mathematics and physics
C.
found to have a genetic characteristic
D.
found to be capable of visualizing
【单选题】People who habitually access their imagination are often hailed by their colleagues as “geniuses”.
A.
acknowledged
B.
signaled
C.
greeted
D.
compared
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