The courtesy title Miss is used for a married woman.()
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哪项指标是机体接触甲苯的生物监测指标()。
A. 尿中β2-微球蛋白的测定
B. 尿中马尿酸的测定
C. 尿中苯乙醇酸和苯乙醛酸的测定
D. 尿中甲基马尿酸的测定
E. 尿中三氯乙酸的测定
Non-firm states the price and discount without leaving room for negotiation.()
In international trade, a banker’s letter of credit is not used for the payment of purchase price.()