外加剂的主要功能有()。
A、改善混凝土拌合物流变性
B、调节混凝土凝结时间、硬化性能
C、改善混凝土耐久性
D、调节混凝土的渗透性能
参考答案:A, B, C, D
A.(A) No one in this office is willing to do the translation except yourself.
B.(B) The new secretary will ask someone to fix the date for you.
C.(C) The new secretary can type and hand in the document for you.
D.(D) The secretary is an able person to help you with the translation.
金融衍生工具业务结算完成后,在衍生金融工具表外科目收入(付出)凭证第()联上批注“结清”字样后连同其他资料专夹保管。
A.一
B.二
C.三