0  28595  28603  28609  28613  28619  28621  28625  28631  28633  28639  28645  28649  28651  28655  28661  28663  28669  28673  28675  28679  28681  28685  28687  28689  28690  28691  28693  28694  28695  28697  28699  28703  28705  28709  28711  28715  28721  28723  28729  28733  28735  28739  28745  28751  28753  28759  28763  28765  28771  28775  28781  28789  447090 

则方程实数根的个数为                                                 (    )

       A.0                        B.1                       

       C.2                        D.3

 

第Ⅱ卷(非选择题 共90分)

 

试题详情

12.已知成立的最小整数,

试题详情

       C.18种                  D.24种

试题详情

10.已知的最小值是5,则z的最大值是

                                                                                                                              (    )

       A.10                      B.12                      C.14                      D.15

20090507

试题详情

       ①若;②若;③若;④若

       其中正确命题的个数是                                                                                    (    )

       A.0                        B.1                        C.2                        D.3

试题详情

9.已知直线,给出下列四个命题

试题详情

 

 

 

 

 

 

 

试题详情

8.已知函数的图像

试题详情

       C.                      D.5

试题详情

       A.0                        B.1                       

试题详情


同步练习册答案