消泡剂注入有哪些注意事项？

沥青混合料按其组成结构可分为（）。

A、悬浮-密实结构

B、骨架-空隙结构

C、悬浮-骨架结构

D、密实-骨架结构（嵌挤结构）

氧转移系数

这篇调查报告逻辑严密、证据充分，真是（），有极强的说服力。
填入括号里最恰当的一项是（）。

A.无可厚非

B.无可非议

C.无懈可击

D.无所不至

Just how does a person arrive at an idea of the kind of person that he is He develops this (1) of self through a gradual and complicated (2) which continues throughout life. The notion is an (3) that one establishes only with the help of others. (4) the elementary knowledge that one is short or tall is a comparative judgment that we cannot make (5) we have the opportunity to (6) ourselves with others. One’s idea of qualities which are harder to (7) is even more dependent upon other people’s ideas.

Whether one is intelligent, or stupid; attractive, or ugly; these and many other ideas of the self are (8) from the reactions of people with whom we (9) This process of (10) the nature of the self from the reaction of others has been labeled the "Looking-glass Self" by Cooley, who carefully analyzed this psychological (11) of self-discovery.

Just as the picture in the mirror gives an image of the physical self, (12) the perception of the reactions of others gives an image of the social self. We know, (13) , that we are good at certain things and not at others. This (14) came to us from the reactions of other persons, first our parents and then other individuals (15) in life. It should be remembered that, as other people’s reactions could be (16) and understood in more than one way, the looking-glass self with which the individual (17) may easily differ from the image others have actually formed of his (18) Clearly, it is our perception of the responses of others and not their (19) responses that (20) our self-image, and these perceptions are often not accurate.

4（）

A.Even

B.Only

C.But

D.Hence

建设工程中用于消防安全的建筑防火构（配）件和设备也是消防产品。（）