The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in_____________?
(A) the principle of test
(B) the method of taking observations
(C) the method of preparation of soil suspension
(D) all of the above
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in_____________?
(A) the principle of test
(B) the method of taking observations
(C) the method of preparation of soil suspension
(D) all of the above
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