局部接地极可设置于巷道水沟内或其他就近的潮湿处。设置在水沟中的局部接地极应用面积不小于0.75平方米、厚度不小于3毫米的钢板,并应平放于水沟深处。()
参考答案:错
— __________
— Sure, I'd like to try some vegetable soup and a bottle of Tsingtao beer. [ ]
A. What would you like?
B. May I take your order?
C. What kind of drink do you prefer, soup or beer?
D. What do you want to do?
在饮食因素中大肠癌的主要发病原因是().
A.低脂肪食谱
B.高糖食谱
C.高蛋白质食谱
D.低维生素食谱
E.食物纤维不足