皮皮学，免费搜题
登录
搜题
【单选题】
设函数f(x)在区间(a,b) 内满足 ,则函数在此区间内是( )A.
单调减少且是凹的
B.
单调减少且是凸的
C.
单调增加且是凹的
D.
单调增加且是凸的
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】炔烃不但可以加一分子卤素,而且可以加两分子卤素,但却比烯烃加卤素困难,反应速率也小,为什么?
【单选题】Don't forget the appointment with the principal at the registry office, _____ you? [ ]
A.
don't
B.
will
C.
do
D.
shall
【单选题】Don't forget to filter the replenishing oil and vent the system. 02010276
A.
Don't forget filtering the replenishing oil.
B.
Don't forget venting the system.
C.
Don't forget to filter the replenishing oil .
D.
Do remember to filter the replenishing oil and vent the system .
【单选题】Don't forget the appointment with the principal at the registry office, ______you?
A.
don't
B.
do
C.
will
D.
shall
【简答题】选择耐旱植物不是（）园林绿化植物的选择的基本原则。
【单选题】Don't forget to write to me, ______?
A.
will you
B.
didn't you
C.
are you
D.
don't you
相关题目：
参考解析：
知识点：
题目纠错 0
发布
