我
- A.<img src="//img1.yqda.net/question-name/6e/e9b070a417677841b609350ebaaeb3.jpg" width="100" height="24"/>
- B.<img src="//img1.yqda.net/question-name/f9/bfa3e4dd3e705e1df5b892dc1c345f.jpg" width="100" height="22"/>
- C.{x│x＞0}
- D.{x│x＞4}
- 5
-
- A.A
- B.B
- C.C
- D.D
- A.A
- B.B
- C.C
- D.D
- A.80
- B.40
- C.20
- D.10
- A.1
- B.2
- C.3
- D.4
- A.若l⊥α，α⊥β则l<img src="//img1.yqda.net/question-name/c7/c7e18feb2d00afd8e167b9f9bfa5db.jpg" width="19" height="17"/>β
- B.若l∥α，α∥β则l<img src="//img1.yqda.net/question-name/c7/c7e18feb2d00afd8e167b9f9bfa5db.jpg" width="19" height="17" />β
- C.若l⊥α，α∥β则l⊥β
- D.若l∥α，α⊥β则l⊥β
- A.充分而不必要条件
- B.必要而不充分条件
- C.充分必要条件
- D.既不充分也不必要条件
- 5
-
- A.A
- B.B
- C.C
- D.D
