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【单选题】
输送机的表面用金属条板或管子构成,如竹席状,而在每个条板或管子上有一枚用硬质材料制成的导向滑块,能沿条板作横向滑动。平时滑块停止在输送机的侧边,滑块的下部有销子与条板下导向杆联结,通过计算机控制,当被分拣的货物到达指定道口时,控制器使导向滑块有序地自动向输送机的对面一侧滑动,把货物推人分拣道口,从而商品就被引出主输送机,这描述的是下列哪种分拣机A.
式分拣机
B.
胶带浮出式分拣机
C.
翻转倾斜式分拣机
D.
滑块式分拣机
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皮皮学刷刷变学霸
举一反三
【单选题】设 X 、 Y 、 Z 都是 int 整型变量 , 且 x=2, y=3, z=4, 则下面的表达式中 , 值为 0 的表 达式是 ( )
A.
'x'&&'z'
B.
(!y= =1)&&(!z= = 0)
C.
(x
D.
x||y+y&&z-y
【单选题】What is the kinetic energy ?
A.
The two balls hit each other just after they hit the ground, the smaller tennis ball has gained from the bigger basketball.
B.
The two balls hit each other just after they hit the ground, the bigger basketball has gained from the smaller tennis ball.
C.
The two balls hit each other just after they hit the ground, the smaller tennis and the bigger basketball both have from each other.
【单选题】9 单选Magnetostrictive materials can convert energy into kinetic energy, or the reverse
A.
Heat
B.
Magnetic
C.
Kinetic
D.
Electric
【单选题】Which of the following centrifugal pump components converts the liquid kinetic energy of velocity to the potential energy of pressure?
A.
Impeller
B.
Electric motor
C.
Volute
D.
Eye
【单选题】设x、y、z都是int整型变量,且x=2, y=3, z=4,则下面的表达式中,值为0的表达式是( )。
A.
'x'&&'z'
B.
(!y= =1)&&(!z= = 0)
C.
(x
D.
x||y+y&&z-y
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