下列说法有误的一项是 [ ] A．《敬畏自然》从总体上理性地思考人与自然的关系，

下列做法中，不会对人造成危害的是（　　）

A．用食醋熏蒸，进行室内消毒

B．在食盐中添加工业用盐（NaNO₂）

C．在蒸馒头的面团中加一点烧碱

D．在不通风的浴室内使用燃气热水器

Victor, Khumo and Sethunya are partners in a printing firm. The parties have agreed that the day-to-day business of the firm will be left to Sethunya but that she would not have authority to buy more than P10,000 worth of goods on credit. When a paper merchant, Kebonye, visits the firm, Sethunya tells him that she intends to sell some books and stationery ‘for her own account’. Kebonye is impressed by Sethunya and supplies P10,000 worth of paper and stationery to the firm on favourable credit terms. Payment is now due but the firm does not have sufficient funds to pay any of the money owed.Required:Advise all the parties concerned as to their rights and obligations. (10 marks)

预防术后切口感染使用抗菌药物的最佳时间是（）

A．术前三天给药

B．术前30-60分钟给药

C．术前一天给药

D．术前6小时给药

E．术后回病房即给药

取得“过轨运输许可证”的货车有什么标记？

输油管道