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【简答题】
Chemical formulas that indicate the actual numbers of atoms in a molecule are called molecular formulas. Chemical formulas that give only the relative number of atoms of each type in a molecule are called empirical formulas. The subscripts in an empirical formula are always the smallest possible whole-number ratios. The molecular formula for hydrogen peroxide is , for example, whereas its empirical formula is .
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【单选题】The virus is transmitted most commonly through ______.
A.
programs sent by modem
B.
shrink-wapped retail software
C.
piracy of software
D.
the use of floppy disks
【简答题】设a=0x54=01010100B,b=0x3b=00111011B,则a&b=____B。
【判断题】如何实现共同富裕问题,是()晚年非常关心的一个重要理论问题。
A.
正确
B.
错误
【简答题】Questions 36 to 40 are based on the following passage. Now custom has not been commonly regarded as a subject of any great importance. The inner workings of our own brains we feel to be uniquely worth...
【判断题】可以按月、周、日查看课程访问量,不能按时段查看。
A.
正确
B.
错误
【单选题】以下文章中,属于下对上陈述主张的是
A.
《苏武传》
B.
《留侯论》
C.
《郑伯克段于鄢》
D.
《谏逐客书》
【简答题】If you’re a common user of computer, are video card and sound card the most commonly seen parts?
【判断题】如何实现共同富裕问题,是邓小平晚年非常关心的一个重要理论问题。
A.
正确
B.
错误
【单选题】高渗性脱水的判断指标是
A.
血钠<130mmol/L
B.
血钠130-15ommol/L
C.
血钠>150mmol/L
D.
血钾<3.5mmol/L
E.
血钾>5.5mmol/L
【简答题】高渗性脱水的判断指标是
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