采用定额比例法计算在产品成本时,所使用的定额主要有()
A、材料定额消耗量
B、材料定额费用
C、工时定额消耗量
D、材料计划单位成本
E、产品产量定额
参考答案:A, B, C
凡是逆浓度梯度而转运需要载体能量,脂溶性大分子量的化合物通过生物膜的方式()。
A.简单放散
B.滤过
C.主动转运
D.载体扩散
E.胞饮和吞噬
Which of the following statements concerning mature skeletal muscle is FALSE
A.The cells are multinucleated
B.A sarcomere is the region between two successive Z disks
C.The nuclei are centrally located
D.Myofidrils display a characteristic crossbanding pattern
E.Actin, myosin, troponin, and tropomyosin are present