A. Ctrl键
B. 空格键
C. Alt键
D. Esc键
A、http://nos.netease.com/edu-image/95D1B93F4A367CA4A1233E2320436299.png?imageView&thumbnail=520x520&quality=100
B、http://nos.netease.com/edu-image/898C4B6066DABF10E39DE3C1E2BD5361.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/045487CDC091D03357AA8897EA5C5C95.png?imageView&thumbnail=520x520&quality=100
D、R
A、R
B、http://nos.netease.com/edu-image/92C0B76C4629FD112B7317C24B6EDC20.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/BD52B9D37C86EBA4964D491594CF10BC.png?imageView&thumbnail=520x520&quality=100
D、http://nos.netease.com/edu-image/1241930A1E6C82658ACD420D31474C45.png?imageView&thumbnail=520x520&quality=100
A、http://nos.netease.com/edu-image/E957A7F06E26DC4A1126AA00D7BBE4F9.png?imageView&thumbnail=520x520&quality=100
B、http://nos.netease.com/edu-image/EB09DC8D141ED46645DA00397608C742.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/0D96E020DFF6AA39B3F38E9688AD4C04.png?imageView&thumbnail=520x520&quality=100
D、http://nos.netease.com/edu-image/8F6DA32B4C21CF5AD32EFBA6A498C44B.png?imageView&thumbnail=520x520&quality=100
A、http://nos.netease.com/edu-image/F9D8A326FF53768C66DA7AFF64CE22D2.png?imageView&thumbnail=520x520&quality=100
B、http://nos.netease.com/edu-image/E56C096AC661F7999C6348783C5DA161.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/A7532A56117B32580CB29395E957D29D.png?imageView&thumbnail=520x520&quality=100
D、http://nos.netease.com/edu-image/32B2867BA80748DA0228A697AE2D0E1E.png?imageView&thumbnail=520x520&quality=100
A、http://nos.netease.com/edu-image/26612BC1F6E776C82465AF7983B42890.png?imageView&thumbnail=520x520&quality=100
B、http://nos.netease.com/edu-image/B1912AA5201300835E5B904B00D20D63.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/CEBB4E37A4D821B731DC94F2375CDA86.png?imageView&thumbnail=520x520&quality=100
D、http://nos.netease.com/edu-image/7517E8DA8B82F5F90D9E3159D220DAA2.png?imageView&thumbnail=520x520&quality=100
A、http://nos.netease.com/edu-image/6C2856B131E8309BA62B4E518A192E3F.png?imageView&thumbnail=520x520&quality=100
B、http://nos.netease.com/edu-image/6498FD40D665592D868A5A6B00969896.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/378E18FBBD097EF5E893C2DD505C5D82.png?imageView&thumbnail=520x520&quality=100
D、R
A、http://nos.netease.com/edu-image/B71E18BFDFE6BB37BA5873979A028BEF.png?imageView&thumbnail=520x520&quality=100
B、http://nos.netease.com/edu-image/162512CF538E46D20A88D6DA39507FE3.png?imageView&thumbnail=520x520&quality=100
C、http://nos.netease.com/edu-image/D907D7ECBF63EC66807CF4F7ABB18A05.png?imageView&thumbnail=520x520&quality=100
D、http://nos.netease.com/edu-image/0F74B13248F267B6278368CF78A79B7A.png?imageView&thumbnail=520x520&quality=100
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