Incoterms are a set of trading terms and rules that identify the()imposed upon sellers and buyer
A. obligations
B. costs
C. risks
D. inspection costs
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At present, the core of China’s export market strategy is to achieve a()export market structure
A. diversified
B. centralized
C. subdivided
D. natural
The Belt and Road Initiative is a (n)()
A. agenda
B. project
C. initiative
D. strategy
带头结点的单链表first为空的判定条件是()
A. first == NULL;
B. first->link == NULL;
C. first->link == first;
D. first != NULL;