正常成人脉压差是 A. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 20~30 mmHg B. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 25~40 mmHg C. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 30~45 mmHg D. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 30~40 mmHg E. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 35~50 mmHg