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【单选题】

关于冰雹的双偏振雷达参量Zdr,说法正确的是()

A.
与冰雹大小关系密切
B.
与冰雹外层的薄水膜情况密切
C.
与冰雹的形状关系密切
D.
与冰雹大小、形状、水膜的关系都不密切
题目标签:雷达冰雹参量
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参考解析:
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【单选题】雷达测方位原理是利用特性()。

A.
雷达天线定向发射和接收
B.
雷达天线旋转
C.
雷达天线与扫描线同步
D.
以上都是

【单选题】船用雷达接收系统的(),雷达的灵敏度就越高()

A.
噪声系数越小,通频带越窄
B.
噪声系数越小,通频带越宽
C.
噪声系数越大,通频带越窄
D.
噪声系数越大,通频带越宽

【单选题】S模式航管雷达进行的三大改进是:()

A.
单脉冲处理、选择性询问、数据通信
B.
脉冲处理、可用性、话音通信
C.
脉冲处理、选择性询问、可用性
D.
脉冲处理、话音通信、数据通信

【单选题】For the (26) month, mysterious falls of large chunks of ice (冰雹) (27) rained down on Spain and Italy. Juana Sanchez, a 70-year-old woman in Almeria, southern Spain, was knocked (28) when she was struc...

A.
Although eyewitnesses to the phenomenon report that they did not see anything in the sky that could account (44) the ice, scientists had to come up with a rationalization. Professor Jesus Martinez Frias, the geologist investigating the ice falls in Spain, told BBC News that the ice pieces had probably been (45) through sudden temperature drops in the stratosphere. This was the most likely explanation, he said, for the "very unusual" phenomenon.

【单选题】雷达定量测量降水的误差主要是因为()。

A.
 雷达难于精确测量参数
B.
 计算方法精度低
C.
 z-I关系不稳定
D.
 单部雷达探测范围有限
相关题目:
【单选题】雷达测方位原理是利用特性()。
A.
雷达天线定向发射和接收
B.
雷达天线旋转
C.
雷达天线与扫描线同步
D.
以上都是
【单选题】船用雷达接收系统的(),雷达的灵敏度就越高()
A.
噪声系数越小,通频带越窄
B.
噪声系数越小,通频带越宽
C.
噪声系数越大,通频带越窄
D.
噪声系数越大,通频带越宽
【单选题】S模式航管雷达进行的三大改进是:()
A.
单脉冲处理、选择性询问、数据通信
B.
脉冲处理、可用性、话音通信
C.
脉冲处理、选择性询问、可用性
D.
脉冲处理、话音通信、数据通信
【单选题】For the (26) month, mysterious falls of large chunks of ice (冰雹) (27) rained down on Spain and Italy. Juana Sanchez, a 70-year-old woman in Almeria, southern Spain, was knocked (28) when she was struc...
A.
Although eyewitnesses to the phenomenon report that they did not see anything in the sky that could account (44) the ice, scientists had to come up with a rationalization. Professor Jesus Martinez Frias, the geologist investigating the ice falls in Spain, told BBC News that the ice pieces had probably been (45) through sudden temperature drops in the stratosphere. This was the most likely explanation, he said, for the "very unusual" phenomenon.
【单选题】雷达定量测量降水的误差主要是因为()。
A.
 雷达难于精确测量参数
B.
 计算方法精度低
C.
 z-I关系不稳定
D.
 单部雷达探测范围有限