原子吸收光谱分析中,测量的方式是峰值吸收,而以吸光度值反映其大小。( )
参考答案:对
_______ , the girl didn’t seem able to do _______ right and the boss was very angry.
A.Tired and discouraged, anything
B.Tired and discouraged, everything
C.Being tired and discouraged, everything
D.To be tired and discouraged, nothing
患者女,20岁。反复发作喘息、呼吸困难、咳嗽2年。体检:双肺散在哮鸣音,心脏无异常。下列检查结果中有助于明确诊断的是()
A.最大呼气流量显著降低
B.第一秒用力呼气量降低
C.最大呼气中段流量降低
D.支气管舒张试验阳性
E.X线胸片显示肺纹理稍多