旧麻绳使用时，许用拉力必须按新麻绳的（）计算。
A.50%
B.60%
C.70%
D.80%
参考答案：A
He had a with his wife about their son's education. [ ]
A. quarrel
B. debate
C. help
D. discuss
《商业银行法》规定，对同一借款人的贷款余额与商业银行资本余额的比例不得超过()。
A.8%
B.10%
C.12%
D.15%
