请在下方输入要搜索的题目：

When multiple people operate a machine tool, ( )

A、twopeoplecanoperatethemachineatthesametime;
B、onlyonepersoncanoperateatthesametime;
C、onlyonepersoncanoperateatthesametime,andotherstudentscanleavethemachinetorest;
D、Alloftheabovearecorrect

发布时间：2025-08-12 07:29:02

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