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【单选题】
加工容易、装拆方便,应用最广泛的固定是()A.
连接
B.
过盈配合
C.
花键连接
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举一反三
【单选题】The circuit in Figure 8-1 fails to produce the proper data output. The individual flip-flops are checked with a logic probe and pulser and each checks OK. What is the most likely cause of the problem?
A.
One of the interconnect lines between two stages has a solder bridge to ground.
B.
The data output line is grounded.
C.
One of the flip-flops has a solder bridge between its input and Vcc.
D.
One of the clock input lines is open.
【单选题】In computer case, , sometimes called system board, is the largest and most important circuit board.
A.
blackboard
B.
chipboard
C.
motherboard
D.
circuit board
【判断题】For RC circuits, it is most convenient to choose the capacitive voltage; for RL circuit, it is best to choose the inductive current.
A.
正确
B.
错误
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