直接成本
A．病人的药费B．伤病造成的工资损失C．病人休假造成的工资损失D．疾病引起的疼痛E．病人过早死亡带来的工资损失
参考答案：A
In the developing nations, the technology has the capacity to reach teachers in remote and educationally ______ areas and hopefully improve teaching skills and productivity.
A．defective
B．efficient
C．deficient
D．effective
某电动机正常工作时的电流为15A，则在1min内通过电动机的电荷量是______C．
