设计钢筋混凝土简支T梁,需拟定的主要尺寸有()、梁高、()、翼缘板厚度。
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荷花、睡莲常用于园林水景布置,荷花品种都耐寒,但睡莲需选择耐寒性的种类.
A. 正确
B. 错误
A bank has requested proposals for a storage solution to upgrade their disaster recoveryprocesses for their System z, UNIX, and Microsoft Windows environment. The solution mustsimulate a multi-site environment and provide the customer the ability to explore Metro Mirror,Global Mirror, Global Mirror for z/OS, and FlashCopy. Floor space is limited. Which solution bestmeets the specified requirements?()
A. Two IBM System Storage DS8100 systems
B. One IBM System Storage DS8300 with two LPARs
C. Two IBM System Storage DS6800 systems in a single rack
D. One IBM System Storage DS6800 for System z, and SVC for UNIX and Window
环境空气中二氧化硫、氮氧化物的日平均浓度要求每日至少有()h的采样时间。
A. 10
B. 12
C. 14
D. 16
E. 18
服务业向顾客提供的产品是无锡产品,具有无形性、不可储存性和()的特点。
A. 价值难以计量性
B. 不可逆转性
C. 生产与消费相分离
D. 不属于生产性产出