A.(25±5)min B.(45±5)min C.(30±5)min D.(35±5)min
A.2個(gè)月 B.3個(gè)月 C.6個(gè)月 D.12個(gè)月
A.第一個(gè)30s B.第二個(gè)30s C.第三個(gè)30s D.最后一個(gè)30s