移植心脏病人的血钾应不超过
A.3.0mmol/L
B.3.5mmol/L
C.4.0mmol/L
D.5.0mmol/L
E.6.0mmol/L
参考答案:B
---Did Peter fix the computer himself?
---He , because he doesn’t know much about computers.
A.has it fixed
B.had fixed it
C.had it fixed
D.fixed it
公司发行股票与发行债券的目的都是为了追加资本金。( )