过期妊娠时()
A.孕妇体重不再增加或稍减轻
B.孕妇体重稍增加
C.孕妇体重继续增加
D.羊水量保持不变
E.羊水继续增加
参考答案:A
It’s the present situation in poor areas_____calls for much higher spending on education and training.
A.which
B.what
C.who
D.that
简述辊面波纹对生产的影响。