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【单选题】
下列属性描述中不属于数值类型属性的是（）A.
Type_name’High
B.
Type_name’Low
C.
Type_name’Middle
D.
Type_name’Left
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【单选题】Bacteria are microscopic organisms which live on the surface of objects. They are one of the most ancient living things, which exist on this planet for nearly 4,000 million years. Do you know the size...
A.
Bacteria are as big as a pinhead.
B.
Bacteria can not be seen by an ordinary microscope.
C.
Bacteria are hard to see because they often live together.
D.
Bacteria are very small so they can only be measured in microns.
【简答题】1996～2003年间，从事高新技术产品出口的企业数量增长最快的是（ ）。
【简答题】1996至2003年间，从事高新技术产品出口的企业数量增长最快的是（ ）。
【简答题】C Scientists used to explore on the suce of the ocean. Now they are exploring below the suce, too. They want to know about ocean water and the plant and animal life deep in the ocean. In 1934 th...
【单选题】The less the surface of the ground yields to the weight of the body of a runner,______to the body.
A.
the stress it is greater
B.
greater is the stress
C.
greater stress is
D.
the greater the stress
【单选题】关于口罩的使用不妥的做法是
A.
戴口罩时需要遮住嘴巴
B.
戴口罩时需将口鼻完全遮住
C.
戴口罩时位置不可过高，避免影响视线
D.
口罩摘下时，应将戴在口鼻内侧的一面向内折好，放入干净的口袋
E.
一次性口罩使用后需及时处理
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