A monitor is a type of ____________
A. semaphore
B. low level synchronization construct
C. high level synchronization construct
D. none of the mentioned
查看答案
The monitor construct ensures that ____________
A. only one process can be active at a time within the monitor
B. n number of processes can be active at a time within the monitor (n being greater than 1)
C. the queue has only one process in it at a time
D. all of the mentioned
What are the operations that can be invoked on a condition variable?
A. wait & signal
B. hold & wait
C. signal & hold
D. continue & signal
在设计凸轮机构时，滚子半径必须大于凸轮理论轮廓外凸部分的最小曲率半径。
A. 对
B. 错
凸轮机构中，凸轮的基圆半径越小，则压力角越大，机构的效率就越低。
A. 对
B. 错
微信支付 
支付宝支付