题目内容

Which complement has the highest serum level?

A. C3
B. C4
C1q
D. C2
E. C5

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Which of the following complement components is involved in both immune adhesion and opsonization?

A. C2b
B. C3b
C4a
D. C5b
E. C6b

The common feature of the three complement activation pathways is

A. The same C5 convertase is required.
B. The same ions are required.
C. The same C3 convertase is required.
D. The same activators are required.
E. The formation of membrane attack complex and its cytolytic effect are the same

In MBL pathway, which of the following is not related to the formation of C5 convertase?

A. C4
B. MASP
C2
D. C3
E. Factor B

某企业经批准评价发行优先股股票,筹资费率和股息年利率分别为5%和8%,则优先股成本为()。

A. 8.42%
B. 3.26%
C. 5.58%
D. 11.72%

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