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【多选题】
对数控机床来说,“顺序控制” 是在数控机床运行过程中,以CNC内部和机床各行程开关,传感器,按钮,继电器等的开关量信号状态为条件,并按照预先规定的逻辑顺序对诸如()的运行等进行的控制。与“数字控制”比较,“顺序控制”的信息主要是开关量信号。A.
主轴的起停、换向
B.
刀具的更换
C.
工件的夹紧、松开
D.
液压、冷却润滑系统
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举一反三
【简答题】(教材)1.11 写出下列十进制数的 8 位原码、反码和补码。 ( 1 )+ 0 ( 2 )+ 15 ( 3 )+ 82 ( 4 )+ 127 ( 5 )- 0 ( 6 )- 45 ( 7 )- 127 ( 8 )- 128
【单选题】Which of the following are TRUE of partnerships?1The partners’ individual exposure to debt is limited.2Financial statements for the partnership by law must be produced and made public.3A partnership i...
A.
1 and 2 only
B.
2 only
C.
3 only
D.
1 and 3 only
【单选题】Coco Chanel __________ to _______ in Switzerland during WWII.
A.
went; lived
B.
go; lived
C.
went; live
D.
go; live
【多选题】机器人按结构坐标系特点方式分类，有__________、__________、__________与多关节型。
A.
直角坐标型
B.
极坐标型
C.
圆柱坐标型
D.
工具坐标型
【单选题】It largely the efforts of the government and those companies whether the housing prices can be brought down to a more reasonable level.
A.
leads to
B.
depends on
C.
results in
D.
carries out
【单选题】Which TWO of the following are advantages of trading as a partnership? 1 Additional capital can be raised because more people are investing in the business 2 A partnership has a separate legal identit...
A.
1 and 2
B.
1 and 4
C.
2 and 4
D.
2 and 3
【简答题】Compair the time to the certain during WWII.
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