PCR引物延伸温度一般为()
A.96℃
B.85℃
C.72℃
D.62℃
E.55℃
参考答案:C
We made it possible the task would be finished ahead of time within three weeks.
A.what
B.that
C.which
D.how
材料一般具有特长性状,但由于有较严重的缺点而不能马上得到利用的植物资源是()