对“溶液喷射”可“传布周身”与“外敷”“只能对覆盖的枝条有效”这一看似矛盾的说法,解释不当的一项是( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
2002年新配方口服补液盐(ORS)溶液的张力是
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