The public issue has two types, which are ______（）

(I) There are two types of exchanges in the secondary market for capital securities: organized exchanges and over-the-counter exchanges. (II) When firms sell securities for the very first time, the issue is an initial public offering.

A、(I) is true, (II) false.

B、(I) is false, (II) true.

C、Both are true.

D、Both are false.

There are two types of encryption:()

A. secret key

B. double keys

C. missing key

D. public key

This issue is so complicated because______.

A．the pope has no capacity to deal with it

B．it involve two poles of near certainty

C．it may affect the pope's orthodoxy

D．there are two parties on this issue in the church

1. In domestic chickens, the plume color has two types (white and color) which was controlled by two pairs of genes C and O. When both C and O are dominant, the plume shows color; otherwise, the plume shows white. Now there is a cross: ♂CCoo (white) × ccOO (white) ♀ ↓ F1 (color) When F1 testcrosses with double homozygote, there are 68 color and 204 white chickens in the offspring. Question: Are O and C linked together？ If yes, what is the cross over value？ If no, please explain why.

A manufacturing company has four types of cost (identified as T1, T2 , T3 and T4). The total cost for each type at two different production levels is: Cost type Total cost for 125 units Total cost for 180 units $ $ T1 1,000 1,260 T2 1,750 2,520 T3 2,475 2,826 T4 3,225 4,644 Which two cost types would be classified as being semi-variable？

A、T1 and T3

B、T1 and T4

C、T2 and T3

D、T2 and T4

A．endocentric

B．exocentric

C．finite

D．non-finite