搜题请搜索小程序“爱下问搜题”
问题 单项选择题

鼻前庭囊肿在无菌条件下穿刺，可抽出（）。

A.透明或半透明的黏液或浆液性液体

B.血性液体

C.脓性液体

D.草绿色黏稠液体

E.姜黄色易凝集液体

答案

参考答案：A

解答题
已知
a
⊥
b
，且|
a
|=2，|
b
|=1，若对两个不同时为零的实数k、t，使得
a
+（t-3）
b
与-k
a
+t
b
垂直，试求k的最小值．
查看答案
问答题

       据《史记》记载秦孝公死后，旧贵族诬告商鞅谋反结果商鞅被处死。你认为商鞅变法是成功了，还是失败了？为什么？

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                            

查看答案