胸腔穿刺的方法,正确的是()
A.严格无菌操作
B.沿胸骨下缘进针
C.操作中预防空气进入胸膜腔
D.术中密切观察患者反应
E.用2%利多卡因麻醉
参考答案:A, C, D, E
厨房冷栋、冷藏设备的种类有哪些?
Make sure you've got the passports and tickets and ________ before you leave.[ ]
A. something
B. anything
C. everything
D. nothing