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Blind calcium supplementation may lead to high blood calcium, kidney stones, nutritional imbalance of mineral elements, even heart disease, prostate cancer, etc., and must be stopped. There are three factors to consider calcium deficiency. Clinical examination shows calcium or vitamin D deficiency indication (such as low bone density, high alkaline phosphatase, high calcium phosphorus product); The concentration of vitamin D in blood was normal; Low calcium intake (e.g. <3/4 recommended).
Self-cleaning strainer is used to clean the drainage system without interruption. It can monitor the working status of the filter and the automation is very high. The requirements for various filtering precision are covered from 10um to 3000um.
Maintenance operations within a specified time period, the station attendant in after completion of maintenance work pin down should immediately report to train dispatcher, train dispatcher release maintenance job no longer end restore traffic command. If you need to extend the operation time, the train dispatcher will issue the dispatch order approval.
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