跨步电压触电也属于间接接触触电属于直接接触触电。
参考答案：错
Tom's mother kept telling him that he should work harder, but ______ didn't help. [ ]
A. he
B. which
C. she
D. it
计算题：新焙烧工序焙烧6CGΦ350*1910，一次浸渍增重率15%，一次焙烧后体积密度1.58g/㎝3，试计算二次焙烧后该产品体积密度？（二烧残炭率按50%计算）
