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【单选题】
加工中心的最大的特点是( )
A.
利用加工中心的自动换刀装置,使工件在一次装夹后,可以连续完成对工件表项自动进行钻.扩.铰.镗扎.攻螺纹.铣削等多工序的加工
B.
加工中心能自动改变机床主轴转速.进给量和刀具相对工件的运动轨迹及其他辅助机能
C.
主轴系统结构简单,无齿轮箱变速系统
D.
加工中心的导轨都采用了耐磨损材料和新结构,能长期的保持导轨的精度,在高速重切削下,保证运动部件不振动,低速进给时不爬行及运动中的高灵敏度
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必定增加
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He knew even less than George.
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【单选题】The driver insisted(坚持) he ______ the way but he ______ lost. [     ]
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knew; gets
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knew, got
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know, gets
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切片、去壳
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发汗
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【单选题】He posed ________ a connoisseur in traditional Chinese paintings, but actually he knew nothing about paintings.
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as
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for
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like
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【单选题】__________ ， he knew a lot．
A.
As he was young
B.
Young as he was
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【单选题】Although he knew littleabout largeamount of work done in the field ,he succeeded where more well-informed experimenters failed.
A.
a the              
B.
the a               
C.
a 不填
D.
不填 the
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【单选题】挺胸凸腹的步态特征常见于
A.
腓肠肌麻痹
B.
胫前肌无力
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A.
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【单选题】The driver insisted(坚持) he ______ the way but he ______ lost. [     ]
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knew, got
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【简答题】He knew the problem wasserious and promised to look into it _____ he reached office. A. atthat moment        B. for that moment C.immediately           D. soon
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【多选题】天然药物常用的加工方法包括( )
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切片、去壳
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发汗
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查看完整题目与答案
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A.
as
B.
for
C.
like
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As he was young
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【单选题】Although he knew littleabout largeamount of work done in the field ,he succeeded where more well-informed experimenters failed.
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查看完整题目与答案