卷烟纸不属于下列哪项范畴。（）A、烟草制品B、烟草专卖品C、烟草产品D、烟用材料

Warm water freezes more quickly than cold water. Sir Francis Bacon said that almost four hundred years ago. But few people believed him. Later, a Canadian scientist George Kell proved the English scholar was right. Dr.Kell filled an open jar（罐子）with cold water. He filled another with warm water. He put them both in the same low temperature. And the warm water froze first.

What was the reason? Some of the warm water changed into vapour. It went into the air. This meant that less of the warm water was left to freeze. And so the warm water froze faster than the cold water.

小题1: Sir Francis Bacon was__________________.

A．an American chemist

B．an English scholar

C．a Canadian scientist

D．a French physicist小题2: Dr.Kell’s jars were both_____________________.

A．put in a place of the same low temperature

B．filled with warm water

C．left empty

D．put on a long table小题3: The cold water froze more slowly because_____________.

A．there was less of it left

B．there was more of it left

C．something else was added to it

D．its jar was much bigger小题4: Dr.Kell proved what Bacon said in _____________ way.

A．a difficult

B．a hard

C．a wrong

D．a simple

患者女性，35岁，因“摔伤左前臂8小时”来诊。查体：前臂肿胀，皮肤破损流血，瘀斑，剧痛，有短缩畸形。

诊断首先考虑（）

A.前臂软组织挫裂伤

B.骨筋膜间室压力增高

C.尺、桡骨双骨折

D.桡骨骨折

E.尺骨骨折

低压电动机绕组相间及对地的绝缘电阻，用500V绝缘电阻表摇测，应不低于（）

A.0.5MΩ

B.0.38MΩ

C.1MΩ

D.10MΩ

在256色环境中，可以使用Flash8进行创作。

雄激素能够增加何种物质水平，有助于肝脏清除胆固醇（）。

A.乳糜微粒

B.极低密度脂蛋白

C.低密度脂蛋白

D.中密度脂蛋白

E.高密度脂蛋白