GB7588规定电梯的曳引钢丝绳根数最少不能少于()根,直径不能小于8mm。
A.1
B.2
C.3
D.4
参考答案:B
As soon as the teacher came in, the boys stopped ____. [ ]
A. laugh
B. to laugh
C. laughing
D. laughed
患儿,4个月。腹泻3天,稀水便,每日5~6次,呕吐3次。护士指导家长正确的口服补液方法是()
A.服用期间不饮水
B.用等量水稀释
C.少量多次
D.1次全量
E.配制后再加糖