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【单选题】
简单分组涉及总体的某一个标志，复合分组则涉及总体两个以上标志，因此，将两个简单分组排列起来，就是复合分组。 ( )A.
正确
B.
错误
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【简答题】机床的类别代号中C 代表 （） 。
【单选题】20180271 ( )is very fast storage used to hold data. It connects directly to the microprocessor.
A.
CPU
B.
Memory
C.
Disk
D.
I/0 device
【单选题】The fourth generation computers can be characterized by both the jump to monolithic integrated circuits and the invention of( ).
A.
microprocessor
B.
transistor
C.
chip
D.
circuit
【简答题】试用外径单一循环G90指令编写下图所示工件的加工程序,毛坯为φ50mm棒料,只加工 φ30mm外圆至要求尺寸。
【多选题】Which of the following features belongs to a computer system using independent (standard) IO interface addressing ()
A.
I / O interface address space and memory address space are independent and separate. That is, the I / O interface address does not occupy the memory address space.
B.
The microprocessor manages the I / O devices using dedicated input (IN) and output (OUT) instructions for data transfer.
C.
The CPU uses special I / O read / write control signals for read / write control of I / O devices.
D.
The CPU uses storage unit operation instructions to manage the I / O devices.
【单选题】The following figure shows the circuit diagram of MIPS microprocessor. When the control signal AluSrc is effective, it means that the immediate number in the instruction is extended to participate in ...
A.
valid
B.
invalid
C.
not sure
D.
high Z
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