【简答题】已知a 2 =1,|a|=-a,求 4-4a 的值.
【简答题】已知:□+△=300,□÷4=24,求△=______,□=______.
【简答题】已知 (1)若a=4,求 (2)若 ,求a的取值范围.
【简答题】①已知:r=4分米,求:C? ②已知:C=18.84米,求:S?
【多选题】关于企业内部审计说法正确的是:( )
D.
对企业政策、工作程序和计划的遵循程度进行测定;
【简答题】The last half of the nineth century ________ the steady improvement in the means of travel. A) has witnessed B) was witnessed C) witnessed D) is witnessed
【简答题】关于投资基金的收益说法不正确的是( )。