当货物重心在（）范围内时，叉车能以最大起重量进行正常的装卸作业。
A、货叉长度
B、货叉宽度
C、载荷中心
D、货叉任何
参考答案：C
There are two common types in page replacement algorithm: stack and non-stack strategies. When a real page number increase only stack algorithm can increase the hit rate monotonously. In the following replacement algorithm, which one belongs to non-stack strategy( ).
A．FIFO
B．LRU
C．PFF
D．OPT
视神经外面的三层鞘膜分别与颅内的三层鞘膜相连续，颅内的压力可经________传至视神经处。通常眼内压________于颅内压，一旦此平衡破坏可引起________。
