填空题

A--Import licensing B--Export restrictions
C--Technical barriers D--Subsidies
E--Voluntary export restraints F--Import prohibition
G--Sanitary and phytosanitary measures H--Tax discrimination
I--Access restrictions J--Foreign ownership restrictions
K--Anti-dumping measures L--Government procurement
M--Import quota N--Domestic content regulations
O--Customs valuation P--Export licensing
( )海关估价 ( )税收歧视