【单选题】采用于胶法或湿胶法制备乳剂时,初乳中植物油、水、胶的比例一般为
【简答题】采用干胶法制备乳剂时,在初乳中植物油、水、胶的比例通常为( )
【单选题】采用干胶法制备乳剂时,在初乳中植物油、水、胶的比例通常为
【判断题】干胶法制备乳剂时,在初乳中油(植物油)、水、胶的比例是3:2:1。( )
【判断题】干胶法制备乳剂时,在初乳中油(植物油)、水、胶的比例是4:2:1。( )
【简答题】We have three children at school so we see them more in the evening.
【判断题】当轨距挡板严重磨损,钢轨与轨距挡板、轨距挡板与承轨槽挡肩离缝超过2mm时应进行修理或更换( )。
【单选题】We didn't lose heart ______ we failed three times.
【判断题】We have three children at school so we see them more in the evening.
【单选题】制备乳剂时,初乳中植物油、水、胶的比例为: