国外建设工程项目设计阶段投资估算的误差率范围为( )左右。
A．±5%
B．±10%
C．±20%
D．±30%
参考答案：A
看看你的应变能力，用所给单词的适当形式填空。
1.It's important for us ____ (study)English well.
2.English ___ (help)us know how to communicate with the world.
3.We would like ___ (read) the article.
4.You'd better ___ (not tell)him the news.
5.My parents often encourages me ___ (try)new things.
Auer小体最常见于（）
A.类白血病反应
B.急粒白血病
C.慢粒白血病
D.急淋白血病
E.慢淋白血病
