皮皮学，免费搜题
登录
搜题
【单选题】
建筑石膏的化学分子式是:A.
α-CaSO4•1/2H2O
B.
β-CaSO4•1/2H2O
C.
CaSO4
D.
CaSO4•2H2O
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】集线器属于OSI七层模型中( )层的设备。
【单选题】在单车试验时，装有104型分配阀的车辆进行紧急制动试验，其制动缸的最高压力应为（）。
A.
（420±10）kPa
B.
（一480±10）kPa
C.
（420±20）kPa
D.
（480±10）kPa
【单选题】My aunt doesn't have much money, _________ she always enjoys herself.
A.
but
B.
and
C.
or
D.
so
【单选题】某人投资了三种股票,这三种股票的方差-协方差矩阵如下表,矩阵第(i,j)位置上的元素为股票i与j的协方差,已知此人投资这三种股票的比例分别为0.3,0.3.O.4,则该股票投资组合的风险是( D )。 A B C A 100 120 130 B 120 144 156 C 130 156 16...
A.
．9.0
B.
8.9
C.
12.5
D.
9.7
【单选题】My aunt doesn't have much money, _____she always enjoys himself.
A.
but
B.
and
C.
or
D.
so
【简答题】I have quite a small family. I live with my sister and my parents. My sister's name is ____ and she is 15 years old. She's a student. My mom's name is 2____ and my dad's name is 3____. Mom's a teacher...
相关题目：
【单选题】My aunt doesn't have much money, _________ she always enjoys herself.
A.
but
B.
and
C.
or
D.
so
参考解析：
知识点：
题目纠错 0
发布
