构造地震按震源深度可分为哪三类？

高层民用建筑下列地上某房间需要设置机械排烟设施的是 ()

A.面积超过100m2，且经常有人停留或可燃物较多的地上无窗房间或设固定窗的房间

B.面积超过100m2，且经常有人停留或可燃物较多的地上有窗的房间

C.面积超过50m2，且经常有人停留或可燃物较多的地上无窗房间或设固定窗的房间

D.面积超过50m2，且经常有人停留或可燃物较多的地上有窗的房间

Na、Mg、Al、Si、P、S、Cl七种元素，其金属性（）

A.逐渐减弱

B.逐渐增强

C.非金属性逐渐增强

D.无法判断

Our words are meaningless and cannot be distinguished from their opposites, as can be proved by an example. People think that they know the difference between the meanings of "bald" and "having hair." Suppose an average person twentyone years of age has N hairs on his or her head. We say that that person is not bald but has hair. But surely one hair less would make no difference, and a person with N-1 hairs on his or her head would be said to have hair. Suppose we kept on, with one hair less each time. The result would be the same. But what would be the difference between someone who had one hair and someone who had none We call them both bald. Nowhere can we make a distinction between "bald" and "having hair."
Which of the following statements best counters the argument above

A．The word "bald" can be translated into other languages.

B．A word can have more than one meaning.

C．A word such as "cat" can be applied to several animals that differ in some respects.

D．Words can lack precision without being meaningless.

E．(E) People cannot think clearly without using words.

农村信用社（商业银行）在给集团客户授信前，防止对集团客户过度授信。应查询集团客户的哪些信息？