皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【单选题】
Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. 听力原文: Centuries ago, during the Middle Ages, most of the land in Europe was owned by many different kings and queens, princes and princesses, lords and ladies. They did not all get along. They were always fighting. They all wanted to get more land. To protect themselves, they started building huge homes out of stone. They called their homes castles. A castle was built behind a strong stonewall. The wall was five or six feet thick and ten to twenty feet high. A deep ditch called a moat was dug around the outside of the wall. It was often filled with water, and the only way anyone could enter the castle was to cross a drawbridge. The drawbridge could be raised or lowered over the moat from inside the castle walls. Them was also a tunnel that began in the castle and ended at the moat. This was important in case the castle was captured. It allowed the king and queen to escape. They could swim across the moat and hide in the forest. Living in a castle was not very comfortable. The rooms were cold and damp. Every room could have a fire burning in a great fireplace, but until the twelfth century castles did not have chimneys. The smoke from their fireplaces had to go out through open doors and windows. Meals often had ten or twelve courses. The meat might be wild boar or birds that were boiled or roasted over an open fire. All the food was highly seasoned. People even put pepper in their drinks! The people sat at a long table and ate with their fingers and a knife, all picking their food from the same big dish. They had no napkins. Therefore, they often wiped their hands on pieces of bread. When their fingers were clean, they threw the bread to their hunting dogs. (27)
A.
Kings and queens, princes and princesses, and lords and ladies built castles in order to get more land.
B.
Around the outside of a castle, a moat was dug, which was often filled with water.
C.
A castle was built behind a thick and high stonewall, which was strong enough to stand the possible attack of enemies.
D.
If a drawbridge was pulled up, there was no way for people to enter the castle.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【多选题】在中性点不接地系统中,系统发生单相完全接地故障时特点包括( )。
A.
三相线电压不发生改变,三相用电设备能正常工作
B.
三相线电压发生改变,三相用电设备不能正常工作
C.
非故障相对地电位不升高,不会引起绝缘损坏
D.
非故障相对地电位升高为线电压,容易引起绝缘损坏
【判断题】醋酸溶液经稀释后其 解 离度增大,因而可使其 H+ 浓度增大。
A.
正确
B.
错误
【单选题】热射病的主要发病机制为
A.
大量出汗导致血容量不足
B.
机体缺水后补充大量淡水导致水盐代谢紊乱
C.
体温调节失调,散热受阻,体内蓄热
D.
外周血管扩张致脑供血不足
E.
水、电解质平衡紊乱
【简答题】有些食品的包装袋中有一个小纸袋,上面写着“干燥剂”,其主要成分是生石灰()。 (1)生石灰属于哪种类别的物质? (2)写出生石灰可做干燥剂的理由。 (3)生石灰还可以与哪类物质发生化学反应?列举三例,并写出化学方程式。 (4)小纸袋中的物质能否长期持续地做干燥剂?为什么? (5)在你所认识的化学物质中,还有哪些物质可做干燥剂?举例说明。
【单选题】蛋白质的超二级结构最常见的是
A.
αα
B.
βββ
C.
βαβ
D.
αβα
【单选题】中性点不接地的系统发生单相接地故障时,接地相电容短路,此时三相电容不相等, 中性点将产生( )。
A.
改变
B.
位移
C.
变化
D.
漂移
【判断题】蛋白质的超二级结构就是三级结构。
A.
正确
B.
错误
【简答题】什么是蛋白质的超二级结构
【单选题】在中性点不接地系统中,发生单相接地故障,系统 的三相线电压( )
A.
不变
B.
变大
C.
变小
D.
不清楚
【判断题】蛋白质的超二级结构就是指它的结构域。
A.
正确
B.
错误
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题