根据超声图像所示，判断致病人肾脏积水的梗阻在输尿管哪一段() A．下段 B．中段 C

在如图所示的电路中，电源电压为6V。当开关S闭合时，只有一个灯泡发光，且电压表的示数为6V，产生这一现象的原因可能是

A、灯L₁短路

B、灯L₂短路

C、灯L₁断路

D、灯L₂断路

航运公司应当建立船舶安全与防污染监督检查制度，确保对船舶及其设备进行有效的维护和保养。

Once there was a king who never ate a meal unless there was a dish of fish with it, but one day there was a big storm and the fishermen were not able to go out to catch fish, so the king had no breakfast and no lunch. Then he ordered his servants to tell everybody in his capital that if anyone brought him a fish, he would give him anything that he asked for.

At last, a fisherman caught a big fish late in the afternoon and hurried to the king's palace with it. But the king's Prime Minister would not let him in until he promised to give him half of whatever the king gave him for the fish.

The king was very happy when he saw the fish. He asked the fisherman what he wanted for his fish. To his surprise, the fisherman said, "I want you to beat me two dozen(一打) times with a stick." When the king began to beat him a dozen times, the fisherman jumped away and said, "That is enough for me. I promised the other dozen to your Prime Minister." Then he told the king what had happened between the Prime Minister and himself. The king was very angry. He not only gave the Prime Minister the dozen hits, but also said, "Because you have been dishonest, you will not be my Prime Minister any more. The fisherman will take your place."

小题1:The king didn't have breakfast and lunch because ____.

A．there was a big storm

B．the Prime Minister did not bring him any food

C．there was no fish

D．his servants didn't know how to cook well小题2:. The fisherman took his fish to the king's palace because ____.

A．the king had promised to give him whatever he wanted

B．the king was dying from hunger

C．he wanted to teach the Prime Minister a lesson

D．he wanted to be the Prime Minister小题3:. When the fisherman told the king what he wanted, the king ____.

A．was very happy

B．was very surprised

C．was very angry

D．gave him what he wanted at once小题4:. The king got rid of his Prime Minister because ____.

A．the fisherman was cleverer than his Prime Minister

B．the Prime Minister did not know how to catch fish

C．the Prime Minister was not an honest man

D．the Prime Minister took half of what the king gave the fisherman

对于垂直埋设的单一接地体，离开接地20m以外跨步电压（）。

A、很大

B、接近于零

C、不能忽视

信息系统工程监理及相关信息技术咨询服务取费计算方法》适用于信息系统工程建设过程中的信息网络系统、信息资源系统、信息应用系统的（）中信息系统工程监理服务的取费，以及相关信息技术咨询服务的取费。

A.新建

B.升级

C.改造

D.运行维护