2 2 求力向量F = i − ( y)j + (xyz)k ,使一質點沿曲線由(0,0,0) 移至(1,−1,1)所做之功:
(A)0.1
(B)0.2
(C)0.3
(D)0.4

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統計: A(0), B(0), C(3), D(0), E(0) #1352792