重力线是
参考答案:
由身体重心垂直指向地面的作用线。
—It's better for you to _____ the pear if you would like to eat.
—Why?
—Because there is some pesticide (农药) on it.
—Oh, I see, thank you.[ ]
A. pour
B. peel
C. wash
D. cook
某28岁女性,于中期引产术后出现发热、下腹痛、 * * 脓性分泌物,子宫压痛,应首先考虑()。
A.胎盘、胎膜残留
B.感染
C.出血
D.羊水栓塞
E.软产道损伤