超星 - L25-课后练习 - 查题吧

单选题

() includes adding solder paste to the board, pick and place of the components, soldering, inspection and test.

A. PCB manufacture
B. PCB circuit simulation
C. PCB design flowchart
D. PCB assembly and production process

单选题

() needs to be added to those areas of the board where solder is required.

A. solder screen
B. PCB file
C. solder paste
D. component pad

单选题

Component placement systems, commonly called () machines, are robotic machines which are used to place electronic components, like capacitors, resistors, integrated circuits onto a printed circuit board.

A. wave soldering
B. reflow soldering
C. adding solder paste
D. pick-and-place

单选题

Although some boards may be passed through a wave soldering machine, this process is not widely used for () components these days. Rather than usng wave soldering, reflow soldering techniques are used more widely.

A. static sensitive
B. a hundred or more
C. through hole mount
D. surface mount

单选题

Many assembled PCBs are static sensitive, and therefore must be placed in () bags during transport. When handling these boards, the user must be grounded. Improper handling techniques might transmit an accumulated static charge through the board, damaging or destroying components.

A. metal
B. environmental protection
C. anti-static
D. ESD-safe

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