我国于20世纪50年代提出的外交方针或原则，至今仍富有生命力并国际社会广泛接受的

某咨询团队在咨询改善方案初步形成后，与客户进行方案研讨，大家最关注改善方案的（）。

A．创新性与科学性

B．有效性与可行性

C．科学性与有效性

D．创新性与可行性

阅读短文，回答问题：

电子手表的奥秘

如图（1）所示，电子表可分为数字式石英电子手表、指针式石英电子手表及自动石英表和光动能手表．

（1）数字式石英电子手表：石英晶体的压电效应和二极管式液晶显示相结合的手表，其功能完全由电子元件完成．

（2）指针式石英电子手表：石英表的能源来自氧化银扣式电池．氧化银扣式电池向集成电路提供特定电压，通过集成电路中的振荡电路和石英谐振器使石英振子起振，形成振荡电路源，输出间歇性变化的秒脉冲信号．秒脉冲送到步进电机（相当于电动机），一秒钟推动步进电机动一次，进而带动秒针走一格，使表针准确地显示时间．内部电路简化为如图（2）所示，电池提供能源，确保电路正常工作；集成电路提供频率为1Hz和功率稳定的脉冲信号；步进电机通过齿轮带动指针转动指示时间．

（1）二极管式液晶是由______（导体/半导体/超导体）材料制成的．

（2）步进电机把集成电路输出的电能转化成______能．

（3）步进电机工作的原理是______．

（4）集成电路部分在电路中相当于间歇性工作的______（电源/用电器/开关）．

（5）集成电路输出间歇性变化的秒脉冲信号符合要求的是下列图中的______．

阅读理解。

     Suppose you are a visitor in the land of Mongolia, some friends ask you to eat with them. What kind

of manners do they want you to have? They want you to give a loud burp after you finish eating. Burping

would show that you like your food. In some countries, if you give a big burp, you are told to say "Excuse me, please".

     In many places people like to eat together. But in some parts of Polynesia it is bad manners to be seen eating at all. People show their good manners by turning their backs on others while they eat.

     What are manners like in an East African town? The people try not to see you. They are being polite.

You may see a friend. He may not see you at all. If you are polite, you will sit down beside him. You will

wait until he finishes what he is doing. Then he will talk to you. Manners are different all over the world.

But it is good to know that all manners begin in the same way. People need ways to show that they want

to be friends.

1 . In Mongolia, burping is a way of showing that __________. 

A . you are impolite            

B . you enjoyed the meal prepared by the host

C . your meal was not enough    

D . you are friendly with your host

2 . In Polynesia, to be polite while eating you should __________.

A . eat quickly    

B . sit still    

C . turn your back on others  

D . say "Excuse me, please"

3 . People in an East African town are being polite by __________.  

A . waiting for a long time before visits    

B . sitting down beside others

C . seeing a friend quickly              

D . trying not to see you

4 . We have good manners to show that we __________.

A . are different from other people    

B . don't want other people to worry us

C . begin all manners in the same way  

D . want to be friends with other people

5. The best title for this passage is __________. 

A . Good Manners              

B . All manners is the Same Way

C . Different Kinds of Manners    

D . Do Have Manners

举例说明饭店在各区域应使用什么样的节水龙头。

若剩余电流动作保护器的零序电流互感器二次侧绕组断线，有可能造成（）

A.保护器误动

B.保护器拒动

C.保护器正常动作

D.短路时不跳闸