投高加时，单台高加温升率不应大于（）。_爱下问搜题

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问题填空题

投高加时，单台高加温升率不应大于（）。

答案

参考答案：1.5-2℃/min

选择题

Many youth went to the Shanghai Science and Technology Museum on Nov. 16, 2009, _____ U.S. President Barack Obama delivered a speech during his four-day state visit.

A. which
B. in that
C. where
D. that

问答题简答题

试述旅游资源分类方法及其意义。