水仓(巷道)的顶部标高必须____中央水泵房的底板标高。
A. 低于
B. 高于
C. 远高于
D. 无所谓
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甲之佳肴乙之砒霜,体现了效用的()
A. 主观性
B. 相对性
C. 客观性
D. 独特性
Two armed gangsters broke into the building at dusk and held two women at gunpoint, while their two______________ kept watch at the gate.
A. applicants
B. colleagues
C. accoplices
D. companions
Production is still increasing faster than ______.
A. request
B. demand
C. creation
D. generation
(单选)改变塔的结构参数,会对塔板的负荷性能图有影响。如下叙述正确的是()*
A. 增大塔径,则溢流液泛线下移;
B. 减小板间距,过量液沫夹带线上移;
C. 增加降液管截面积,则过量液沫夹带线下移;
D. 减小板间距,则溢流液泛线上移。