37. What is NOT discussed in this passage?
(A) The loss of energy due to friction.
(B) The transformation of energy.
(C) The factor of mechanical advantage.
(D) The transmission of mechanical energy.
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統計: A(19), B(14), C(106), D(18), E(0) #2351375
統計: A(19), B(14), C(106), D(18), E(0) #2351375