题目内容

钠和钾对燃气轮机透平叶片的危害主要是它们可以与钒结合形成低熔点的共熔化合物,还与硫化合形成硫酸盐,以熔融状态积存在透平叶片上,从而腐蚀机组热通道金属,严重缩短热通道部件的寿命。()

A. 正确
B. 错误

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纯碱外观颜色为()。

A. 深紫色晶体
B. 绿色
C. 白色无水粉末
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我国高程的起算面是()

A. 参考椭球面
B. 平均海水面
C. 黄海高程面
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You plan to have a larger moving window size for the default system-defined moving window baseline because you want to use the adaptive threshold. Which statement factors in this consideration while increasing the size of the moving window?()

A. The collection level for the AWR should be set to BASIC
B. The moving window size must be less than Undo Retention
C. The moving window size should be greater than the Automatic Workload Repository (AWR) retention period
D. The moving window size should be equal to or less than the Automatic Workload Repository (AWR) retention period

合同有什么特征?

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