玻璃器材有哪些常用灭菌法？
参考答案：
有干热灭菌法和高压蒸汽灭菌法（湿热灭菌法）。
发包人供应的材料未通知承包人验收，入库后发生的损坏丢失由( )。
A．承包人负责
B．发包人负责
C．谁承担视具体情况决定
D．承包人和发包人共同负责
I soon found that the work I was doing had already been done by someone else -_____, I was wasting my time.[ ]
A. in a word
B. in all
C. in other words
D. in words
