绝缘导线接头处的机械强度不得低于该神导线原有机械强度的（）。
A.50%
B.70%
C.80%
D.100%
参考答案：D
甲、乙两桶油重量相等．甲桶用去26千克，乙桶倒入14千克，此时乙桶油重量是甲桶油的3倍．两桶油原来各重多少千克？
When Mom looked back on the early days of their marriage, she wondered how they had managed
with _______ money .[ ]
A. so few
B. such few
C. so little
D. such little
