可用被动免疫紧急预防
A.柯萨奇病毒B.埃可病毒C.脊髓灰质炎病毒D.肠道病毒72型E.肠道病毒70型
参考答案:C
若两个相似三角形的相似比为1:4,则它们的面积之比为 [ ]
A.1:2
B.1:4
C.1:5
D.1:16
Which of the following statement about market is FALSE()
A. Over-the-counter-market is called a continuous market.
B. Dealer-markets are price driven markets.
C. If trades occur at any time the market is open, it is called continuous market.