女性,58岁。刺激性咳嗽,痰血,左侧胸痛1个月来院检查。胸片示左侧大量胸腔积液。下列检查项目哪一项是不必要的()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧