代谢性碱中毒的危害是
A.氧离曲线左移
B.使PaCO2降低
C.抑制呼吸中枢
D.氧离曲线右移
参考答案:A,C
Not knowing how to grow crops,the primitive people had no ______ but to gather the fruit and hunt animals for food.
A.conception
B.command
C.virtue
D.alternative
某房地产投资项目的负债合计为3000万元,资产合计为5000万元,流动资产和流动负债分别为2500万元和1250万元,存贷为1500万元。试计算该房地产投资项目的资产负债率为( )。
A.167% B.80% C.200% D.60%