属用于构成十进倍数的SI词头的有()。
A.百
B.千
C.万
D.亿
参考答案:A, B
________ into many languages, Harry Potter is popular with children and adults as well all over the
world. [ ]
A. Being translated
B. Having translated
C. To be translated
D. Having been translated
原料焦油中游离碳含量高,其它生产条件不变那么沥青软化点将()
A.升高
B.不变
C.降低
D.无法确定