Lc4B1145对于人体,安全电压是指不超过110V的电压。
查看答案
在手机带电时可以进行插拔卡不影响手机使用性能。()
A. 正确
B. 错误
放松预应力钢筋前一般构件的砼强度不得()设计强度的()。
粒径小于()μm能进入人体肺部而引起肺病的细微颗粒称呼吸性粉尘。
A. 5
B. 8
C. 10
D. 15
When the carrier is liable for compensation in respect of loss of or damage to the goods such ()shall be calculated by reference to the invoice value of the goods plus freight charges and insurance if paid.
A. cost
B. compensation
C. value
D. price