中东石油输往世界各地的主要运输方式是[ ]
A．管道运输
B．海洋运输
C．公路运输
D．航空运输
答案：B
胸腔负压正常值为（）。
A.吸气相3～5cmH2O，呼气相8-10cmH2O
B.吸气相8～10cmH2O，呼气相3～5cmH2O
C.吸气相3～5mmHg，呼气相8～10mmHg
D.吸气相8～10mmHg，呼气相3～5mmHg
E.吸气相3～5kPa，呼气相8～10kPa
He took a seat opposite Catherine, who kept her gaze fixed on him as if she feared he would vanish were she to remove it.
