第八章单元测试

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1、Not only most of major machine tool manufacturers but also the CNC suppliers offer a wide variety of end-user training on CNC machines.

A、对
B、错

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2、During the early years of hardwired NC, built-in diagnostic tools existed.

A、对
B、错

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3、The emphasis has changed from “how to fix it” to “how it works”.

A、对
B、错

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4、The function of direct current regulated power supply is to input an alternating current power of 220volts, so that it can output __________.

A、direct current 24 volts voltage
B、alternating current 24 volts voltage
C、direct current 200 volts voltage
D、alternating current 200 volts voltage

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5、FANUC control system works under a _________volts voltage.

A、direct current 200
B、alternating current 200
C、direct current 24
D、alternating current 24

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数控技术英语