下列DNA中,一般不用作克隆载体的是()
A.质粒DNA
B.大肠埃希菌DNA
C.病毒DNA
D.噬菌体DNA
E.酵母人工染色体
参考答案:B
______surprises most of us.
A.Wolves are afraid of us
B.The fact that wolves afraid men
C.The fact that wolves are afraid of men
D.Wolves’ afraid of men
初产妇,26岁,妊娠37周,晨起发现 * * 流血,量中等,无明显腹痛,检查有宫缩,上午9时来院就诊。
对确诊有价值的检查结果是()
A.血压140/90mmHg
B.胎心听不清
C.贫血程度与 * * 流血量不相符
D.子宫有局限性压痛区
E.胎先露高浮