根据《标准施工招标文件》(2007),应以( )为基础,公正地确定工程变更价格。
A.预算价
B.原合同价
C.标底价
D.最高投标限价
参考答案:B
____, he never seems able to do the work beautifully.
A.Try as he does
B.As he tries
C.Try as does he
D.As try he does
可使血糖浓度下降的激素是()
A.肾上腺素
B.胰高血糖素
C.胰岛素
D.生长素
E.糖皮质激素