当强酸、强碱溅到皮肤时,应先用大量清水冲洗,再分别用5mg/L的稀醋酸清洗,然后送到医院急救。()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧