TNT慢性中毒常见特征性体征是
A.肝功能损害
B.肾功能损害
C.眼晶状体损害
D.心功能损害
E.皮肤损害
参考答案:C
Today there are more airplanes________ more people than ever before in the skies.
A.carry
B.carrying
C.carried
D.to be carrying
闭式胸膜腔引流装置,错误的是()
A.水封瓶装置密封
B.水封瓶塞上长管须在水平面下3~4cm
C.水封瓶应低于胸腔导管出口30cm
D.引流管在床上妥善固定
E.换瓶时用双钳夹闭引流管近端