A -- Bearer from bond
B -- Certificate bond C
-- Gross settlement
D -- Issue volume E -- Net settlement
F --
OTC market G -- Physical bond
H -- Real time
settlement I -- Registered bond
J -- Replacement cost
risk K -- Securities loan
L -- Short term bills
M -- Tendering system
N -- Tradable bond O -- Trade by
trade settlement P -- Untimely
delivery risk ( )记名国债 ( )竞价系统