The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.

The buttress threads have low frictional resistance characteristic of

1.	The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.
A.	Yes
B.	No
C.	Can't say
D.	None of these
Answer» B. No

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The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.

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