Having read the last paragraph, we can conclude that
A. pride goes before a fall
B. practice makes perfect
C. no pains, no gains
D. failure is tile mother of Success
查看答案
The passage is most likely ______.
A. an advertisement for a product
B. a science report on children
C. an instruction to a musician training course
D. a report on the importance of music
According to the passage, music has a great impact on our life because ______.
A. it is a kind of knowledge
B. it is a great product
C. it is information
D. it is fun
一根普通钢筋混凝土梁，已知：Ⅰ．混凝土和钢筋的强度等级；Ⅱ．截面尺寸；Ⅲ．纵向受拉钢筋的直径和根数；Ⅳ．纵向受压钢筋的直径和根数；Ⅴ．箍筋的直径、间距和肢数；Ⅵ．保护层厚度。在确定其斜截面受剪承载力的因素中，下列何者是正确的( )
A. Ⅰ、Ⅱ、Ⅲ、Ⅳ
B. Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ
C. Ⅰ、Ⅱ、Ⅴ、Ⅳ
D. Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ
以下关于常用建筑钢材的叙述中，何者是错误的( )
A. 建筑常用钢材一般分为普通碳素钢、普通低合金钢和优质碳素钢等三大类
B. 普通碳素钢随钢号增大，强度提高、伸长率降低
C. 普通碳素钢随钢号增大，强度提高、伸长率增加
D. 普通碳素钢按炼钢炉种分为平炉钢、氧气转炉钢、空气转炉钢三种，按脱氧程度分沸腾钢、镇静钢、半镇静钢三种
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