根据《工程建设强制条文》要求,满堂模板支架剪刀撑杆件的底端应与地面顶紧,夹角宜为()
A.40°-50°
B.50°-60°
C.45°-60°
D.45°-55°
参考答案:C
在单因素敏感性分析中,当产品价格下降幅度为5.91%、项目投资额降低幅度为25.67%、经营成本上升幅度为14.82%时,该项目净现值均为零。按净现值对产品价格、投资额、经营成本的敏感程度由大到小进行排序,依次为( )。
A.产品价格→投资额→经营成本 B.产品价格→经营成本→投资额C.投资额→经营成本→产品价格 D.经营成本→投资额→产品价格
--What great changes! It’s years since we_____ each other last time .
-- Believe it or not, It’s the second time that we _____a face –to- face talk
A.met; had had
B.have met; had
C.had been; had
D.met; have had