单项选择题

In the forest corresponding to the following binary tree，how many children does node B have？

A．1
B．2
C．3
D．4
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单项选择题
The principle for a stack memory to store data is
A．FIFO
B．FILO
C．random
D．other way
单项选择题
An instruction that uses indrect addressing mustt contain an address of memory where
A．data is stored
B．a pipeline stall will be executed
C．a page fault is addressed
D．another address is stored
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