【简答题】一个几何体的三视图如图所示,则这个几何体的体积为( )。
【简答题】一个几何体的三视图如图所示,则这个几何体的体积为( )。
【判断题】1 断奏(staccato)的特点是音的规定时值不保持到底,音与音之间是间断地、单个地奏出的。
【单选题】Which of the following best represents the view of ecological communities associated with Frederick Clements in paragraph 2?
A.
Only when all species in a community are at the reproductive stage of development is an ecological community precisely balanced.
B.
When an ecological community achieves 'climatic climax,' it begins to decline.
C.
All climates have similar climax communities.
D.
Ecological communities ually reach the maximum level of balance that is possible for their region.
【判断题】行政事业单位会计核算一定采用收付实现制基础。()
【简答题】一个几何体的三视图如图所示,则这个几何体的体积为( )。