題目列表(包括答案和解析)
| a |
| b |
| c |
| a |
| b |
| c |
| c |
| a |
| b |
| 0 |
| a |
| b |
| a |
| b |
| b |
| c |
| a |
| c |
| a |
| b |
| c |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| c |
| a |
| b |
| c |
| c |
| a |
| b |
| a |
| b |
| a |
| b |
| b |
| c |
| a |
| a |
| c |
| b |
| c |
| a |
| b |
| a |
| b |
| a |
| b |
| A、②④ | B、③④ | C、②③ | D、①② |
| a |
| b |
| c |
| a |
| b |
| c |
| c |
| a |
| b |
| 0 |
| a |
| b |
| a |
| b |
| b |
| c |
| a |
| c |
| a |
| b |
| c |
| a |
| b |
| 0 |
A.①②
B.②③
C.③④
D.②④
①(a·b)·c-(a·c)·b=0;
②|a|-|b|＜|a-b|;
③(b·c)·a-(c·a)·b不與c垂直;
④(3a+2b)·(3a-2b)=9|a|2-4|b|2.
其中是真命題的有( )
A.①② B.②③ C.③④ D.②④
一、選擇題
1.B 2.A 3.C 4.C 5.A6.D 7.C10.B11.C
w.w.w.k.s.5.u.c.o.m
湖北省互聯網違法和不良信息舉報平臺 | 網上有害信息舉報專區 | 電信詐騙舉報專區 | 涉歷史虛無主義有害信息舉報專區 | 涉企侵權舉報專區
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com