为减少和及早发现高危妊娠,以下处理不恰当的是:()
A.病因治疗
B.改善宫内环境,促进胎儿生长发育
C.加强母胎监护
D.一旦发现高危孕妇,立刻终止妊娠
参考答案:D
选择正确译文。
1. 请摘下你的手套。 [ ]
A. Please take off your mitts.
B. Please take off my mitts.
2. 他正在戴帽子。[ ]
A. He puts on his hat.
B. He's putting on his hat.
3. 他打算拿下围巾。 [ ]
A. He is taking off his scarf.
B. He's going to take off his scarf.
两种材料不同的电阻丝,长度之比为1:5,截面积之比为2:3,电阻之比为2:5,则材料的电阻率之比为______.