能使氧解离曲线右移的因素有()。
A.CO2升高
B.pH下降
C.pH增加
D.体温升高
E.体温下降
参考答案:A, B, D
化简:| ∏﹣3|=( )。
What is the term when the consignment is delivered with all the charges up to arrival at the port of destination paid by the seller( )
A.FOB
B.FCA
C.DDU
D.CIF