Flex final类Capabilities
Flex 通过这个类可以获取到我们想了解的一些属性比如当前的系统是什么，当前系统语言是什么等等


avHardwareDisableAVD
hasAccessibility ACC
hasAudio A
hasAudioEncoderAE
hasEmbeddedVideoEV
hasIME IME
hasMP3 MP3
hasPrinting PR
hasScreenBroadcastSB
hasScreenPlaybackSP
hasStreamingAudioSA
hasStreamingVideoSV
hasTLS TLS
hasVideoEncoderVE
isDebugger DEB
language L
localFileReadDisableLFD
manufacturer M
maxLevelIDC ML
os OS
pixelAspectRatioAR
playerType PT
screenColor COL
screenDPIDP
screenResolutionXR
screenResolutionYR
version V

Capabilities 类的所有属性都是只读的。