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【单选题】
America has had many Presidents who have been famous all over the world. People from other countries know the names Washington, Kennedy and so on. However, many men who have served as President of the United States have not been famous in other parts of the world. One example is J.Q .Adams, the sixth man to serve as U.S.President. Very little happened while Adams was President. It was an unhappy time for him, and he wasn't very effective, when his term ended, he went back to the Congress and served as a representative sentative(众议院议员). While he was in Congress, people began to respect him more than they had done while he was President. Adams was strongly against slavery and tried to outlaw it in Washington D.C.People began to look back on his presidency with a different view. Now they saw that he was an independent man with high ideal who loved his country and hated slavery Adams died in 1848 while speaking in the House of Representative. When Adams served as the sixth U.S. President, ____________.
A.
his people didn't regard him as a great man
B.
he tried a lot of means to get rid of slavery
C.
his high ideal made an impression on American people
D.
he did a lot of things against laws
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举一反三
【单选题】关于磷脂,不正确的描述是
A.
膜脂以磷脂为主
B.
膜上的磷脂主要是磷酸甘油脂
C.
不同类的磷脂性质不同
D.
磷脂为两性分子, 每一个分子都由疏水的极性头和亲水的脂肪酸链所组成
E.
磷脂分子的不同结构与膜的流动性有关
F.
以上都不是
【单选题】关于磷脂,不正确的描述是
A.
膜脂以磷脂为主
B.
膜上的磷脂主要是磷酸甘油脂
C.
不同类的磷脂性质不同
D.
磷脂为两性分子 , 每一个分子都由疏水的极性头和亲水的脂肪酸链所组成
【单选题】关于磷脂,不正确的描述是
A.
膜脂以磷脂为主
B.
膜上的磷脂主要是磷酸甘油脂
C.
不同类的磷脂性质不同
D.
磷脂为两性分子 , 每一个分子都由疏水的极性头和亲水的脂肪酸链所组成
E.
磷脂分子的不同结构与膜的流动性有关
【简答题】塑性是金属材料在力的作用下,产生不可逆永久变形的能力。常用的塑性指标是()和断面收缩率。
【单选题】第五套人民币20元纸币背面中间图案在荧光灯下呈现( )荧光图案。
A.
B.
绿
C.
橘黄
【单选题】以下叙述中错误的是( )。
A.
函数的返回值类型不能是结构体类型,只能是简单类型
B.
函数可以返回指向结构体变量的指针
C.
可以通过指向结构体变量的指针访问所指结构体变量的任何成员
D.
只要类型相同,结构体变量之间可以整体赋值
【单选题】关于2000年问题存在的叙述,准确的是()。
A.
家用电脑不存在2000年问题
B.
计算机的所有方面都存在2000年问题
C.
只有涉及到日期和年份处理的系统功能和操作中才可能存在2000年问题
D.
只有使用WINDOWS的计算机才有2000年问题
【判断题】澳大利亚被誉为有袋动物王国,因为这里有很多有育儿袋的动物。
A.
正确
B.
错误
【简答题】以下函数定义的类型符是( )。 A)与x类型相同 B)void类型 C)int类型 D)无法确定
【单选题】常用的塑性指标是 和 ,也是由拉伸试验测定出来的。
A.
屈服强度、伸长率
B.
伸长率、断面收缩率
C.
弹性极限、屈服强度
D.
冲击韧度、伸长率
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