高血压并发急性左心衰时应选用的药物是()
A.呋塞米
B.复方降压片
C.普萘洛尔
D.美托洛尔
E.倍他洛尔
参考答案:A
根据句意及单词首字母完成单词。
1.“Who d____America?” the teacher asked.
2. He comes from an E____country,so he speaks English very well.
3. “I find it difficult to meet all the r____.”Jim said.
4. I want to know the r____for you being away from school.
5. It’s f____to learn another language.
下列实验操作,能达到预期目的是( )
①用托盘天平称取5.6g CuO粉末
②用10mL水和10mL酒精配制成20mL酒精溶液
③将50g溶质质量分数为10%的稀盐酸加热蒸发掉25g水,得到溶质质量分数为20%的盐酸
④用10mL量筒量取8.2mL水.
A.①④
B.①②④
C.①③④
D.②③