口外矫形力上颌可接受的力值是()
A.300~400g
B.400~500g
C.500~600g
D.600~700g
E.800~1100g
参考答案:E
下列巨大儿肩难产的处理,错误的是()
A.抑制宫缩
B.屈大腿
C.压前肩
D.牵后臂
E.做充分大的会阴后一斜切开
I'd like some water, and he wants______. [ ]
A. two bottle orange
B. two bottles of orange
C. two orange
D. two bottles of oranges