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
查看答案
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
What can we infer from the passage
A. Music is of great importance to education.
B. Children will love to go to school if teachers teach music.
C. If you are not satisfied with the product, you cannot get a refund.
D. Children will learn more about music if they listen to the CD-OMs.
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