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• 4. 溶液中含有：硝酸鉀、硝酸鉛、硝酸銅、硝酸鋇鹽類，欲逐一分離及鑑別各成分時，則下列試劑：(甲) K2SO4 溶液、(乙) K2CO3 溶液、(丙) KCl 溶液，加入之先後順序為下列何者？ (A)
• 6. 純水加熱至 T ℃，此時 pH = 6.0，則下列何者正確？(A)水的解離常數變大 (B)此時的 pOH = 8.0 (C)此時的水呈酸性(D)水的離子積變小
• 2. 在定體積下，將 1 莫耳氬氣自 164 ℃ 加熱至 1475 ℃，則氬氣在上述低溫與高溫條件下的擴散速率比為下列何者？(A) 1：2(B) 1：3(C) 1：4(D) 1：9
• 5. 已知 Ag2CrO4、AgIO3 之 Ksp 依次為 5×10-11、1×10-8。今於內含 0.001 M KIO3 及 0.01 M15K2CrO4 的溶液中加入 AgNO3，直至有一半 C
• 3. 已知：(1) Cr2O3(s) + 2 Al(s) → 2 Cr(s) + Al2O3(s)，ΔH= -m kJ                (2) Fe2O3(s) + 2 Al(s) →
• 3. Because it is the last class for Miss Davidson, the sub teacher well-loved by all of the boys, __
• 70. Lichens sometimes reproduce asexually using(A) soredia. (B) ascocarps.(C) basidiocarps. (D) coni
• 2. That the legal drinking age ________ lowered is a hot topic for debate in many states of the US.(
• 5. It is not uncommon for outlaws to dye their hair _____.(A) in case of the police should recognize
• 6. All organisms, regardless of their unique identity, have certain physical characteristics in comm
• 4. At the department store＇s promotion sale last week, _____.(A) Meg almost got 3000 dollars off all
• 7. Great vigilance is required from all of us as this is an emergent situation.(A) courage (B) watch
• 8. At the back of each eye, nerve fibers bundle together to form optic nerves, which join and then s
• 10. In order to meet the challenges of the new e-commerce era, this trading company launched a newwe
• 9. I don＇t have a long walk between classes because the engineering building is adjacent to the chem
• 11. The torrential rains that accompany most hurricanes represent a third significant threat–floodin
• 12. This rise of female subjectivity and autonomy is the inevitable corollary of the feminist moveme
• 13. Robert Butler, the American pioneer gerontologist, underlines the value of life review for the e
• 14. Regarding the coincidence, the judge expects an unequivocal explanation, without which you＇ll ne
• 17. In the science class today, the visiting professor introduced to us an assortment of insects whi
• 16. Computer games act as narcotics on children—mesmerizing them, stunting their ability to think, a
• 15. Investigating closely into a number of contemporary literary theories reveals that some of them
• 18. Over the years, Mrs. McNaron has gradually developed a passion for gardening chiefly as a tempor
• 20. The great migration of European intellectuals to the United States in the second quarter of the
• 19. I just don＇t see how it possible for the kids to keep in good shape, for sugar is ubiquitous in