What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel().
A. Jacob's ladder
B. Manropes
C. Heaving lines
D. All of the above
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一外伤性大量血胸病人,受伤后第5周,现仍有明显呼吸困难。采取下述哪种方法最适宜?()
A. 胸腔穿刺抽血
B. 胸腔闭式引流
C. 开胸纤维膜剥除术
D. 开胸清除凝血块