对既有明桥面,护轨下可加垫总厚度不大于()的垫板。
A.10mm
B.20mm
C.30mm
D.40mm
参考答案:C
My father and his teacher talked a lot about the things and persons ___ they could remember.
A.who
B.which
C.what
D.that
男性,被1万伏高压电击伤双上肢、双下肢,否认外伤及呼吸心跳停止病史。于伤后16小时就诊,体检发现:患者极度烦躁,心率158次/分,血压90/80mmHg,双上肢肿胀明显,桡动脉搏动微弱,皮温低,尿液呈酱油色。
此患者应考虑电击伤并发()
A.脑外伤
B.多发骨折
C.低血容量性休克
D.心源性休克
E.失血性休克