下图为沿23026S地形剖面示意图，读图回答下列问题。图中剖面线穿过了全球六大扳块中

春秋战国盛行的“_______”，反映了我国古代音乐发展的较高水平，在出土的乐器中以__________ 最为珍贵。

关于甲状旁腺功能减退症的临床表现哪项是错误的（）

A.神经肌肉兴奋性增高

B.低血钙

C.高磷血症

D.血PTH降低或测不出

E.早期表现为骨痛，后期表现为纤维囊性骨炎

工作分析的结果以（）的形式表达。

A.工作说明书

B.任务分析书

C.岗位描述书

D.工作指南

Flow control is a function that prevents network congestion by ensuring that (66) do not over-whelm (67) with data. There are three commonly used methods for handling network congestion. (68) is used by network devices to temporarily store bursts of excess data in memory until they can be processed. (69) are used by receiving devices to help prevent their buffers from overflowing. (70) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted.

A．Buffer

B．Source-quench messages

C．window

D．Windowing

E．Buffering

如何从大便性状来辨别不同证型的泄泻？