第一章绪论 1.混凝土构件中配置钢筋的效果 (1)可以显著提高构件的承载力(梁可以带裂缝工作) (2)可以改善构件的受力性能提高变形能力(使构件有明显的破坏预兆)

四、翻领的设计及变化 翻领是领面向外翻摊的一种领型由于领 面按照其形状单独制成,因此没有接缝, 平顺光滑。 翻领有加底领和不加底领两种形式

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一、单项选择题 1、我国从到死亡时止,具有民事权利能力,依法享有民事权利,承担民事义务 A.年满10岁 B.年满18岁 C.年满16岁 D.从出生时起

ORGANIC CHEMISTRY The first question we need to ask ourselves s What is“ Organic Chemistry\?

11. Carbonyl Alpha Substitution reactions and condensations

The analysis of the outcome of a reaction requires that we know the full structure of the products as well as the reactants In the 1 gth and early 20th centuries, structures

p.91 3.1 Naming alkenes 1. Name the parent hydrocarbon, find the longest carbon chain that contains the double bond.命名母体

5. Aromatic Compounds p: 153 Aromatic was used to described some fragrant compounds in early 19th century Not correct: later they are grouped by chemical behavior(unsaturated compounds that undergo substitution rather than addition Current: distinguished from aliphatic compounds by electronic configuration

What is an alkyl halide An organic compound containing at least one carbon-halogen bond (C-X) X(F, Cl, Br, Replaces h Can contain many C-X bonds