Before bowel surgery, the infant is to receive oral neomycin for 3 days. The appropriate pediatric dosage of neomycin sulfate is 10. 3 mg/kg q 4 hours. The infant weighs 15 pounds, 6.4 ounces. Which of the following dosages most closely approximates a safe daily dose

A. 50 mg/day.
B. 150 mg/day.
C. 280 mg/day.
D. 430 mg/day.

关于贴片甲的用途，下列说法正确的是：（）。

A.能根据个人喜好装饰指甲

B.使自然指甲更易于折断

C.能改变原有自然指甲形状

D.能根据跟人喜好修补自然指甲