未知题型 One study on high school English language textbooks in Iran found that male characterizations were used as much as _____13_____ % of the time.（请填写数字）

未知题型 From the following data calculate the cost of raw materials consumed for the year ended 31 March 2006. ￡ Inventory of raw materials as at 1 April 2005 14,323 Inventory of raw materials as at 31 March

未知题型 耐受性是指随着连续、反复吸毒，机体对原有剂量的毒品会变得不敏感，此时，吸毒者为追求快感不得不增加药量的现象。影响耐受性的因素有_________、用药方式。