为什么用化学消毒法消毒后的器械，需用无菌水冲洗？
参考答案：
很多化学消毒剂对金属器械有腐蚀作用，有些对皮肤及粘膜有刺激性。
The reason__________ the president of Czech is widely discussed recently is__________ he was seen
"to steal" a pen at a press conference in Chile. [ ]
A. why; because
B. that; that
C. why; that
D. why; why
射吸式焊炬适用于低压乙炔，不能用中压乙炔。
