葡萄糖酸钙用于硫酸镁解毒时,10%的葡萄糖10ml静脉推注,必要时每小时可重复一次,直至中毒症状消除,但24小时之内不得超过多少次( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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