青霉素分子中所含的手性碳原子数应为()
A.1个
B.2个
C.3个
D.4个
E.5个
参考答案:C
While suctioning a client’s laryngectomy tube, the nurse should insert the catheter
A. about 1 to 2 inches.B. as the client exhales.C. until resistance is met, then withdraw it 1 to 2 cm.D. until the client begins coughin