除使用仪器外,临床上呼吸功能的基本检查方法还有()。
A.观察呼吸运动
B.听取呼吸音
C.检查痰液
D.观察呼吸状态
E.X线胸透
参考答案:A, B, D
--Writing is a skill, it looks easy but it be difficult.
--No wonder I'm not so good at writing. I need to practice a lot.
A. must
B. can
C. should
用户欠费违约金如何计算?