奶牛的正常体温范围是()
A.37.5~38.5℃
B.37.5~39.5℃
C.37.50~39.0℃
D.38.0~39.5℃
E.38.5~39.5℃
参考答案:B
Would you please _______ my baby brother while I'm cooking?[ ]
A. take out of
B. take care of
C. take part in
D. take away from
旋喷形式可采用下列哪几种工艺方法?
A.单管法
B.二重管法
C.三重管法
D.多重管法