Một mẫu đá vôi khô cân nặng m (250); sau khi hút nước ở điều kiện thường 48h đem cân được mbh (264) ; khối lượng thể tích của đá khô là 2700(kg/m^3); Hh số bão hòa Cbh (0.83) Yêu cầu: a/ Xác định độ hút nước theo khối lượng b/ Xác định độ hút nước theo thể tích c/ độ rỗng toàn phần d/ độ rỗng hở? Độ rỗng kín?

What kind of words would be to find the information from a database about changes in height of an ocean surface over a 20 year period

Which statement best conveys the meaning of the text? a. i'm troubled by the disasters i've seen in my life and can't take it anymore

Read the passage from the "general prologue" to the canterbury tales and answer the question. at table she had been well taught withal, and never from her lips let morsels fall, nor dipped her fingers deep in sauce, but ate with so much care the food upon her plate that never driblet fell upon her breast. in courtesy she had delight and zest. her upper lip was always wiped so clean that in her cup was no iota seen of grease, when she had drunk her draught of wine. what can we infer is chaucer's point in including this description of the prioress? to illustrate her commendable manners. to distinguish her from less courteous pilgrims. to show her discomfort at being outside her convent. to emphasize her lack of religious priority