【简答题】His explanation was u_________________ (清楚易懂的).
【多选题】面源扩散模式常用等效点源法处理,下列说法正确的有( )。
B.
假设虚拟点源在面源单元中心线处产生的烟流宽度等于面单元宽度
D.
当面源面积S≤1 k2时,面源扩散模式可按点源扩散模式计算
E.
当面源面积S≤10k2时,面源扩散模式可按点源扩散模式计算
【单选题】关于引起无排卵性功能失调性子宫出血的原因,叙述正确的是
【多选题】面源扩散模式常用等效点源法处理,下列说法正确的有( )。
A.
方法中的横向及垂向扩散参数为σ y 和σ z
B.
假设虚拟点源在面源单元中心线处产生的烟流宽度等于面单元宽度
D.
当面源面积S≤1 km 2 时,面源扩散模式可按点源扩散模式计算
E.
当面源面积S≤10km 2 时,面源扩散模式可按点源扩散模式计算
【单选题】Which is a domestic-level explanation for the 2003 U.S.-led war against Iraq?
A.
President Bush’s desire to remove Saddam Hussein
B.
the rise of neoconservative policymakers in the U.S. administration
C.
the global distribution of power in favor of the United States
D.
the unwillingness of the UN Security Council to punish Iraq
【单选题】The new physics is exciting because it______.
A.
offers a comprehensive explanation of the universe
B.
proves the existence of a ruling intelligence
C.
incorporates the work of men of genius
D.
makes scientific theorizing easier to understand