煤的水分每改变1﹪,标准温度相应变化约6~8℃。
参考答案:对
. To save class time, our teacher has ___ students do half of the exercises in class and complete the other half for our homework.
A.us
B.we
C.our
D.ours
住院后首先采取的治疗措施是
A.安定10 mg肌注
B.25%的硫酸镁10 ml溶于25%葡萄糖10 ml中静脉推注
C.吗啡10 mg皮下注射
D.盐酸哌替啶100mg肌内注射
E.甘露醇250m1快速静滴