超声波雾化器的雾化罐内放的药液应进行稀释,其稀释的液量一般为()
A.5~10ml
B.10~30ml
C.30~50ml
D.50~70ml
E.70~100ml
参考答案:C
The food smells _____. I don’t like it.
A.well
B.good
C.bad
D.terribly
送(受)话器每()年更换一次,送(受)话器缆线每年更换一次。
A.半
B.1
C.2
D.3