液压传动起升机构的驱动装置有高速油马达和低速油马达两种。
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世界野生生物基金会的会徽是采用了我国特有的珍贵动物是()
A. 丹顶鹤
B. 大熊猫
C. 骆驼
在执行自动列车运行调整功能时,()根据使用列车运行图对早、晚点时间在一定范围内的图定列车自动进行列车运行调整。
A storage specialist is proposing a solution consisting of an IBM System Storage TS3200 TapeLibrary and a SAN Volume Controller, both of which are being added to a customer’s existing SANenvironment for the first time. Which of the following should be completed before the proposal ispresented to the customer?()
A. TDA
B. Capacity Magic
C. business case review
D. SAN configuration review
当过闸船队种类较多,尺度相差较大时,为缩短船队过闸时间和节省耗水量,在闸室中设中间闸首,将闸室分为两段,这种船闸称为具有中间闸首的双级船闸。
A. 正确
B. 错误