[单项选择]吸气性呼吸困难严重者可出现三凹征,三凹征是指
A. 胸骨上窝、锁骨上窝和肋间隙在吸气时明显下陷 B. 胸骨上窝、锁骨上窝和肋间隙在呼气时明显下陷 C. 胸骨上窝、锁骨下窝和肋间隙在吸气时明显下陷 D. 胸骨下窝、锁骨上窝和肋间隙在吸气时明显下陷 E. 胸骨上窝、锁骨下窝和肋间隙在呼气时明显下陷
第12题:[单选题] The necessity of the segregation of cargoes is determined by ______. A. experience from practice B. various types of cargoes C. different types of ships D. personal abilities 参考答案:B 【参考译文】货物隔离的必要性视货物的不同类型而定。 【解 析】necessity 必要性segregation分开,隔离 【相关考题】