叶轮的半径增加能使通过叶轮的流量增大。
参考答案:错
I'm very surprised that _____ a little animal eats _____ many insects in a short time.[ ]
A. so; such
B. so; so
C. such; such
D. such; so
用高敏法检查甲胎蛋白(A-FP)阳性率最高者为
A.原发性肝细胞癌
B.原发性胆管细胞癌
C.转移性肝癌
D.肝硬化
E.孕妇