顺序控制盘是CNG站中不可缺少的设备,通过顺序控制盘实现对加气站的储气控制,该系统为()自动程控装置。
A、时间
B、机械
C、集成式
D、人工
参考答案:B
From his _____ voice, I have to say that he is really _____.
A.disappointing; disappointed
B.disappointed; disappointing
C.disappointing; disappointing
D.disappointed; disappointed
有利于气道阻塞早期诊断的肺功能指标是()
A.FEV1/FVC
B.RV/TLC
C.MMFR
D.最大呼气流速-容量曲线
E.FEV3/FVC