脊髓灰质炎临床可能表现为()
A.均为瘫痪型
B.隐性感染、瘫痪型
C.隐性感染、顿挫型、瘫痪型
D.隐性感染、顿挫型、无瘫痪型和瘫痪型
E.顿挫型、瘫痪型
参考答案:D
According to the survey, two thirds of the area__________covered by trees now and 90% of the population__________contributions to the Greening Project in the city.
A.is ; has made
B.are; have made
C.is; have made
D.are; has made
以下选项中关于工程单价的说法正确的是( )。
A.工程单价是市场价
B.工程单价是确定和控制概预算造价的基本依据
C.利用工程单价可以进行工程竣工决算
D.按照用途划分,工程单价可以划分为定额单价和补充单价