下列哪种材料可单独用作软膏基质A．植物油B．液状石蜡C．固体石_爱下问搜题

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问题单项选择题

下列哪种材料可单独用作软膏基质

A．植物油
B．液状石蜡
C．固体石蜡
D．蜂蜡
E．凡士林

答案

参考答案：E

改错题

此题要求改正所给短文中的错误。对标有题号的每一行作出判断：
如有错误（每行只有一个错误），则按下列情况改正：
此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。
此行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。

    During the weekend I travelled by air the first time
in my life. I generally travel by train and bus. It is
both cheaper and safe. But this was a short journey.
In the beginning I didn't feel very happily, but this
feeling did not last longer. The journey was very exciting.
I was soon high up in the sky among the cloud. The views
of mountains, fields and rivers were interested.
I enjoyed my short or comfortable journey very much.
This experience has shown that travelling in air is
actually the safest way of make journeys.

1.________
2.________
3.________
4.________
5.________
6.________
7.________
8.________
9.________
10.________

填空题

质量检验是根据产品（）和有关（）运用一定的（）技术方法对产品进行质量特性的检查，判明其是否符合技术标准。