检查动物心搏动,在左侧肩端线下1/2部的第3~5肋间,在第4肋间最明显的动物是()
A.牛、羊
B.家兔
C.家禽
D.犬
E.马
参考答案:A
I think it is a very interesting book is well worth reading, I have never read before.
A.that; the one
B.which; one
C.which; the one
D.what; one
尿素酶试验原理是有些细菌能产生尿酶分解尿素产生氨,使培养基呈碱性,从而通过酚红指示剂变为红色。