级指
参考答案:
即品质级数,是科学研究中常用的品质指标之一,它等于出售后各级烟重量占出售的总重量的百分数与指数值的乘积的总和。
The fire was completely ________ shortly afterwards with the help of the firemen.
A.cut down
B.put out
C.give out
D.floated away
从概念上讲,主权债务是一国对内的负债。( )