电刺激狗的中枢神经系统可造成反射性高血压。
参考答案:错
He was born the morning of June, 1987. [ ]
A. at
B. in
C. on
D. for
抗可溶性抗原的抗血清要长期保存,理想的方法是()
A.液体4℃
B.低温
C.加叠氮钠
D.真空干燥
E.液氮罐保存