孕妇和哺乳者每天需要叶酸为()
A.100~200μg
B.300~400μg
C.200~300μg
D.500~600μg
E.1000μg
参考答案:C
根据图画内容, 用正确的单词填空.
1. It is ____ in Beijing today.
2. It will be ____ in Sydney tomorrow.
3. After the rain,it will be ____ in Paris tomorrow.
4. It is ____ in Tokyo today.
5. It will be ____ in Ottawa tomorrow.
6. It will be ____ in Beijing tomorrow.
7. It is ____ in Sydney today.
有关预激综合征的叙述中,哪项错误()
A.心电图特有改变为P-R间期缩短,QRS波起始部有Delta波
B.并发阵发性室上性心动过速时,刺激迷走神经可终止发作
C.禁用异丙肾上腺素
D.QRS波宽小于0.11秒
E.避免使用泮库溴铵