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【判断题】
盐酸布比卡因分子中含有叔胺结构,能和三硝基苯酚试液生成黄色沉淀。
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】把100°C,101.3 kPa下的1 mol水向真空完全蒸发为同温、同压下的水蒸气, 已知水的气化热为41 kJ•mol-1,则: = ___________, = _________。
【判断题】An example of sexism: housework is regarded as the wife’s responsibility whether she has a full-time job or not; the husband reputed as a considerate one because he “pitched in on the housework”.
A.
正确
B.
错误
【简答题】Henry James's emphasis on psychology and on the human consciousness proves to be a big breakthrough in novel writing and had great influence on the coming generations. That is why he is generally rega...
【判断题】在计算机中所表示的数有时会发生溢出,其根本原因是计算机的字长有限。(    )
A.
正确
B.
错误
【单选题】—I can't help but feel very ________ about the matter. Linda, my dear, tell me the truth. —Oh, Mum, there is nothing between Tom and me.
A.
particular
B.
lonely
C.
anxious
D.
concerned
【单选题】制冷装置所配蒸发器在设计工况其制冷量应 。
A.
与压缩机制冷量相同
B.
与冷库热负荷相同
C.
与A大10%~20%
D.
比B大10%~20%
【简答题】把 100°C , 101.3 kPa 下的 1 mol 水向真空完全蒸发为同温、同压下的水蒸气,已知水的气化热为 41 kJ·mol -1 ,则 = ___________ kJ · mol -1 。
【单选题】下列说法中正确的是( )。I,在计算机中,所表示的数有时会发生溢出,其根本原因是计算机的字长有限II,8421码就是二进制数III,一个正数的补码和这个数的原码表示一样,而正数的反码是原码各位取反Ⅳ,设有两个正的规格化浮点数:N1=2m×M1,N2=2n×M2,若m>n,则有N1>N2
A.
I、II
B.
II、III
C.
I、III、Ⅳ
D.
I、Ⅳ
【多选题】William Wordsworth is regarded as the nature poet, he focuses on ______.
A.
the call of nature
B.
man
C.
human nature
D.
man's relationship with natural world
【简答题】(0.31,0.11)把100°C,101.3 kPa下的1 mol水向真空完全蒸发为同温、同压下的水蒸气,已知水的气化热为41 kJ·mol-1,则 = ________, = ________。
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