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【单选题】
When processing inherited attributes in the bottom-up calculation of l-attributed definition, it is necessary to introduce ()
A.
Marker nonterminal
B.
Marker Terminal
C.
Synthesized attribute
D.
L attribute
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】In the bottom-up calculation of L-attributed definition, the correct statement is ()
A.
The introduction of marker nonterminal can delete the actions embedded in the translation scheme
B.
Make the inherited attribute evaluation of the L-attributed definition appear only at the left end of the production
C.
The synthesized attribute calculation of L-attributed definition only appears at the right end of the production
D.
The synthesized attribute calculation of L-attributed definition only appears at the left end of the production
【单选题】To perform the numerical differentiation, the accuracy of three-point method for the first-order derivative reaches:
A.
O(h)
B.
O(h2)
C.
O(h3)
D.
O(h4)
【单选题】In the storage arrangement of local data, the padding area is the useless space caused by () problem
A.
alignment
B.
Order of data
C.
data type
D.
space
【单选题】To calculate the numerical differentiation, which method gives the best accuracy?
A.
two-point method
B.
three-point method
C.
five-point method
D.
seven-point method