当电路中某线路的电流的参考方向与电流的实际方向相反时,则该电流( )
A. 一定是正值
B. 一定是负值
C. 不能确定正负
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选择不同参考点时,电路中其余各点的电位不同
A. 对
B. 错
1.下列属于企业存货的是()。
A. 企业已销售产品,客户已付款但尚未取走
B. 企业已付款购买,尚在运输途中的原材料
C. 不属于企业,暂放在仓库的材料
D. 以上均不正确
1.下列物资属于存货的有()。
A. 原材料
B. 工程物资
C. 生产成本
D. 产成品
In August 2003, Europe, particularly France, had one of its worst heatwaves ever. The temperature was sometimes more than degrees. Because of this, many people died. On one night, August 10th, between and people died. In total, more than people died in Europe, including in France.