A、
A. 1/2
B. 2
C. 1
D. 4
, INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/581268" ＼* MERGEFORMATINET 
,则 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/320327" ＼* MERGEFORMATINET 
( )A. 0
B. (1,-1)
C. INCLUDEPICTURE ＼d "https://mooc1-2.chaoxing.com/ananas/latex/p/113749" ＼* MERGEFORMATINET 
D. INCLUDEPICTURE ＼d "http://p.ananas.chaoxing.com/star3/origin/67a557abb156385a453c741fec934ab8" ＼* MERGEFORMATINET 
A. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/08dba66232d751ad814a940634adf071.png" ＼* MERGEFORMATINET 
B. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/22f7f2467b301d1b86e11ba053cc6c88.png" ＼* MERGEFORMATINET 
C. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/acf8af233ff31cbf149e07040894deae.png" ＼* MERGEFORMATINET 
D. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/413915a7ff07be914f66fe2c26bdc200.png" ＼* MERGEFORMATINET 
A. e是割点
B. {a, e}是点割集
C. {b, e}是点割集
D. {d}是点割集
A. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/2c79950d28016a72597b4f4f76fa6919.png" ＼* MERGEFORMATINET 
B. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/8309567273fa234e9387c093ebe78eeb.png" ＼* MERGEFORMATINET 
C. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/55ac4c0e2b3f16262d05e475cb4a70bd.png" ＼* MERGEFORMATINET 
D. INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/35fc36002121149f45d835d016229bae.png" ＼* MERGEFORMATINET 
,则 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/e17a3b2ad5a6d579639f5df659fad89a.png" ＼* MERGEFORMATINET 
