进一步诊断最有价值的方法是
A．胸部CT
B．结核菌素试验
C．胸部超声波检查
D．左侧胸膜腔穿刺
E．痰细菌培养及药敏试验
参考答案：D
My new novel has disappeared.Who _______ have taken it?
A．should
B．must
C．could
D．would
压力钢管钢板划线后应怎样做标记？
