Simulate a request for a picture. The request header contains range, but why is there no content-range field returned?

This is the request header

<code>GET http://subversion.apache.org/images/windows.png HTTP/1.1
Host: subversion.apache.org
Range: 1000-3000
Content-Length: 14
Pragma: no-cache
</code>

This is the response header

<code>HTTP/1.1 200 OK
Date: Sun, 28 Aug 2016 01:33:56 GMT
Server: Apache/2.4.7 (Ubuntu)
Last-Modified: Thu, 14 Jan 2010 21:29:52 GMT
ETag: "1403-47d2696640237"
Accept-Ranges: bytes
Content-Length: 5123
Content-Type: image/png
Cache-Control: no-cache
</code>

He directly returned a complete picture. As expected, it should be a partial picture

Reply content:

This is the request header

<code>GET http://subversion.apache.org/images/windows.png HTTP/1.1
Host: subversion.apache.org
Range: 1000-3000
Content-Length: 14
Pragma: no-cache
</code>

This is the response header

<code>HTTP/1.1 200 OK
Date: Sun, 28 Aug 2016 01:33:56 GMT
Server: Apache/2.4.7 (Ubuntu)
Last-Modified: Thu, 14 Jan 2010 21:29:52 GMT
ETag: "1403-47d2696640237"
Accept-Ranges: bytes
Content-Length: 5123
Content-Type: image/png
Cache-Control: no-cache
</code>

He directly returned a complete picture. As expected, it should be a partial picture