m system視力表

位低視能患者能在1 m處辨識6/20的視標,其視力為下列何者? (A)6/200 (B)1/120 ... 使用M system視力表,在40 cm處可看到2 M的字體,則視力為何? (A)0.1 (B)0.2



相關軟體 MPC BE 下載

MPC BE is a user-friendly media player for the Windows platform, which supports numerous video and audio formats, thereby allowing you to play almost any file you want without any problems whatsoever....

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