A) Simple pits on their radial walls
B) Bordered pits on their lateral walls
C) Simple and bordered pits on their end walls
D) Simple perforation on their end walls
Correct Answer: D
Solution :
The wall area bearing perforation is called perforation plate. Usually the perforations in vessels are present in the end walls but they may be present in the lateral wall too.You need to login to perform this action.
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