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單項(xiàng)選擇題

（）is not the advantage of GERT （Graphical evaluation and review techniques）as compared with PERT （project evaluation and review techniques）.

A. Allowing looping
B. Allowing for dummy tasks
C. Allowing branching
D. Allowing multiple project end results

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單項(xiàng)選擇題

The length of the IPv6 address is （）.

A. 64 bytes
B. 128 bytes
C. 64 bits
D. 128 bits

單項(xiàng)選擇題

A （）is a software that provides a method of communication between two electronic devices over the World Wide Web.

A. router
B. cober
C. J2EE
D. web service