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【单选题】
下列情况中,属于超过承载能力极限状态的是 ( )A.
裂缝宽度超过规范限值
B.
挠度超过规范限值
C.
结构或构件视为刚体丧失平衡
D.
预应力构件中混凝土的拉应力超过规范限值
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反馈参考答案：
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【单选题】下列关于几类生物的特点的叙述，正确的是（）
A.
细菌和蓝藻在结构上有其统一性，具体体现在它们都有细胞壁、细胞膜、核糖体及DNA等
B.
硝化细菌与变形虫结构上的根本区别是：前者有细胞壁，属自养型；后者无细胞壁，属异养型。这也体现了细胞的多样性
C.
颤藻与发菜的共同点是都能进行光合作用，但颤藻含光合色素，而发菜细胞中含叶绿体
D.
一个动物体的不同细胞的形态和功能有其多样性，本质上是由于不同细胞的遗传物质是不同的
【简答题】'When I look back on my childhood I wonder how I survived at all. It was, of course, a miserable childhood. The happy childhood is hardly worth your while. 'Worse than the ordinary miserable childhood...
【简答题】One day, I happened to talk to a stranger (陌生人) on the bus. When he found out that I was from Chicago, he told me that one of his good friends lived there and he wondered if I happened to know him. At...
【简答题】Life became hard when I was 14. My mother and I moved to New York to 36 my father, who’d moved there to find 37 work when I was three years old. He had a job at a restaurant and only visited us 38 eve...
【简答题】常见细胞壁的特化类型有哪几种?说明其特点及在植物体中存在的位置。
【简答题】任何公民，非经（ ）并由公安机关执行，不受逮捕。
【单选题】下列关于公民的人身自由说法错误的是
A.
任何公民非经人民法院批准或者决定，并由公安机关执行，不受逮捕
B.
禁止非法搜查公民的身体
C.
禁止非法搜查或者非法侵入公民的住宅
D.
禁止用任何方法对公民进行侮辱、诽谤和诬告陷害
【简答题】阅读理解 One day, I happened to talk to a stranger on the bus. When he found out that I was from Chicago, he told me that one of his good friends lived there and he wondered if I happened to know him. At ...
【简答题】细胞壁的特化类型及其特点?
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