利用时间重叠概念实现并行处理的是（）
A.流水处理机
B.多处理机
C.并行（阵列）处理机
D.相联处理机
参考答案：A
My neighbour has a good gardener. The height of the tree in his garden is almost ______ the one in mine. [ ]
A. twice than
B. twice of
C. twice that of
D. twice
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