题目内容

What operations can be performed on a semaphore?

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What is the difference between binary and general semaphores?

What is the difference between strong and weak semaphores?

What is a monitor?

注射机预塑过程中，螺杆的运动为。

A. 直线运动
B. 旋转运动
C. 既有直线运动，也有旋转运动