水平热力管道变径时应采用( )连接。A．偏心异径管 B．法兰 C．卡套 D．螺栓

在Rood技术的皮肤、本体感受器刺激中，"强冷、热刺激"属于（）。

A.触觉刺激

B.温度刺激

C.痛觉刺激

D.特殊感觉刺激

E.本体感受器刺激

患者女性，49岁，已婚，孕3产1。因月经紊乱伴经量增多6月于2008-7-20就诊。既往月经4-5／28-32，现月经7-10/15-45，LMP2008-7-18，量多有血凝块。查轻度贫血貌，全身皮肤粘膜无出血点和瘀斑。子宫略增大，双附件未扪及异常。

子宫附件B超提示子宫浆膜下见直径约3cm的低回声包块，下一步做哪种检查？（）

A.诊断性刮宫术

B.分段诊断性刮宫术

C.尿妊娠试验

D.性激素检查

E.盆腔CT检查

F.凝血功能检查

数控机床主轴锥孔的锥度通常为7∶24，之所以采用这种锥度是为了（）。

A.靠摩擦力传递扭矩

B.自锁

C.定位和便于装卸刀柄

D.以上几种情况都是

司机怎样进行日常点检？

Do animals have a culture What do we mean by "culture" Lately social scientists have begun to ask if culture is found just in humans, or if some animals have a culture too. When we speak of culture, we mean a way of life a group of people have in common. Culture includes the beliefs and attitudes we learn. It is the patterns of behavior that help people to live together. It is also the patterns of behavior that make one group of people different from another group.
Our culture lets us make up for having lost out strength, claws, long teeth, and other defenses. Instead we use tools, cooperate with one another, and communicate with language. But these aspects of human behavior, or "culture," can also be found in the lives of certain animals. Animals can make tools, for example. We used to think that the ability to use tools was the dividing line between human beings and other animals. Lately, however, we have found that this is not the case. Chimpanzees(黑猩猩) can not only use tools but actually make tools themselves. Animals can also share knowledge with each other and use their own language to communicate. So it may be important for us to know that the line dividing us from animals is not as clear as we used to think.

The first sentence of the second paragraph "Our culture lets us make up for having lost our strength, claws, long teeth, and other defenses" means ______.

A．as a result of our culture, we have lost our strength, claws, long teeth, and other defenses

B．our culture has enabled us even better though we have lost our strength, claws, long teeth, and other defenses

C．our culture has brought back to us strength, claws, long teeth, and other defenses that we have lost

D．our culture asks that we lose our strength, claws, long teeth, and other defenses which animals still have