题目:
用铜来制备等质量的Cu(NO3)2,下列方法中最合理的方案是( )
A.Cu与浓HNO3反应
B.Cu与稀HNO3反应
C.CuO与稀HNO3反应
D.Cu(OH)2与稀HNO3反应
答案:
答案:C
用铜来制备等质量的Cu(NO3)2,下列方法中最合理的方案是( )
A.Cu与浓HNO3反应
B.Cu与稀HNO3反应
C.CuO与稀HNO3反应
D.Cu(OH)2与稀HNO3反应
答案:C
下列词语中划线的字,读音完全相同的一组是
A.悔悟晦涩诲人不倦毁誉参半
B.栖息蹊跷芳草萋萋休戚相关
C.倔强鳜鱼精神矍铄 * * 诈诡谲
D.墙檐阎罗垂涎三尺不辨妍媸
First impressions are the most lasting. After all, you never get _______ second chance to make
_______ first impression.[ ]
A. a; the
B. the; the
C. a; a
D. the; a
I grew up poor – living with six brothers, my father and a wonderful mother.We had 26 money and few worldly goods, but plenty of love and attention.I was 27 and energetic.I understood that no matter how poor a person was, they could 28 afford a dream. My dream was to be a 29 .When I was sixteen, I could crush a baseball, throw a ninety – mile – per – hour fastball.I was also 30 : my high – school coach was Ollie Jarvis, who 31 me the difference between having a dream and showing strong belief.One particular 32 with him changed my life forever. It was a summer and a friend recommended me for a summer 33 .This meant a chance for my first income – cash for a new bike and new clothes, and the 34 of savings for a house for my mother.The opportunity was attracting, and I wanted to 35 at it. Then I realized I would have to 36 summer baseball to handle the work schedule, and that meant I would have to tell Coach Jarvis I wouldn’t be playing.I was 37 about this. When I told Coach Jarvis, he was as 38 as I expected him to be.“You have your whole life to work,” he said.“Your 39 days are limited.You can’t afford to waste them.” I stood before him with my head 40 , trying to think of how to explain to him why my dream of buying my mom a house and having money in my pocket was worth 41 his disappointment in me. “How much are you going to make at this job?” he demanded. “$ 3.25 an hour,” I replied. “Well, is $ 3.25 an hour the price of a 42 ?” he asked. That 43 laid bare for me the difference between wanting something right now and having a goal.I devoted myself to 44 that summer, and within the year I was offered a $ 20,000 contract.I signed with the Denver Broncos in 1984 for $ 1.7 million, and bought my mother the 45 of my dreams.
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关于糖化血红蛋白,不正确的是()
A.可以了解取血前2~3个月平均血糖控制情况
B.是目前判断糖尿病血糖控制水平的最好指标之一
C.是葡萄糖与血红蛋白13链N端非酶糖化而成,是可逆反应
D.目前还没有作为糖尿病的诊断标准
E.OGTT正常但糖化血红蛋白高于正常者,更应该定期复查血糖
企业于2007年2月1日以436000元的价格购入A公司于2006年1月1日发行的三年期债券,其债券利息按年收取,到期收回本金,债券年利宰为3%,该债券面值为400000元,另支付相关税费 2000元。2007年2月1日该债券2006年利息尚未领取。企业购入该债券不准备长期持有。则企业购入该项短期投资的初始投资成本为( )元。
A.426000
B.438000
C.425000
D.424000