前向散射光(FS)信号的强弱与细胞的哪项成正比()
A.体积大小
B.细胞性状
C.颗粒多少
D.位移速度
E.荧光强弱
参考答案:A
He is only too ready to help others, seldom, ______, refusing them when they turn to him.
A.if never
B.if ever
C.if not
D.if any
风险投资的特点是()。
A.投资创新企业
B.预期回报率低
C.收益来自企业分红
D.风险低