作为一种解决办法，建立托盘共享系统（Pallet Exchange System）针对的是A．托盘的标准化问题B．托盘的所有权与回收问题C．托盘的搬运的时间和降低运输成本问题D．托盘的规格尺寸和通用性问题
作为一种解决办法，建立托盘共享系统（Pallet Exchange System）针对的是
A．托盘的标准化问题
B．托盘的所有权与回收问题
C．托盘的搬运的时间和降低运输成本问题
D．托盘的规格尺寸和通用性问题
参考答案和解析
如果每个进程需要2台设备时不会发生死锁。因为无论系统如何分配资源，3个进程中总会有一个进程可同时获得2台设备运行完成后释放资源，其他进程可顺利运行完毕。 但当每个进程需要设备的数量超过2台时，系统会发生死锁，如每个进程需要3台，比如出现一个进程获得2台设备，另外两个进程获得l台设备，这时每个进程均获得部分资源而且系统中已无空闲资源，当其中一个进程再次申请资源时，无空闲资源而等待，其它进程情况类似就会产生死锁。
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