存储24×24点阵的一个汉字信息，需要的字节数是A) 48 B) 72 C) 144

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问题单项选择题

存储24×24点阵的一个汉字信息，需要的字节数是

A) 48
B) 72
C) 144
D) 192

答案

参考答案：B

解析：每8个点所存储空间等于1字节，所以24×24/8=72。

名词解释

商事交易

单项选择题

待测粉末与氯仿共同振摇，过滤，保留提取过的粉末。（）

A．Shake the powder being examined with chloroform, filter and reserve the extracted powder.

B．Shake the powder being examined with chloroform, filter and evaporate almost to dryness on a water bath.

C．Heat the powder being examined with a mixture of water and hydrochloric acid in a water bath.

D．Heat the powder being examined to boiling with a mixture of ethanol and water.

E．Shake the powder being examined with sulphuric acid, filter and wash the filter with sulphuric acid.