皮皮学，免费搜题
登录
搜题
【单选题】
2-106 对于交流感应电动机,其转差率 s 的范围为( )。A.
1
B.
0
C.
-1
D.
-1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I'm very ________ after walking on the farm, so I go to bed early. [ ]
A.
sad
B.
tired
C.
boring
D.
excited
【简答题】共轨柴油机中，喷油量除了取决于喷油器电磁阀的通电时间外，还取决于（）。
【判断题】设随机变量X服从正态分布N(μ, σ^2 ),且P(X<2)=0.5,则μ=2.< /div>
A.
正确
B.
错误
【单选题】I am very tired today. I _____ go to bed early. [ ]
A.
should
B.
shouldn't
C.
can
D.
can't
【单选题】听力原文：W: Go to bed early and get some rest, Jimmy. You have to get up early. M: But I can't. We're going to have an English test tomorrow morning. I must pass it this time. Q: What is the relationship ...
A.
Employer and employee.
B.
Teacher and student.
C.
Mother and son.
D.
Executive and clerk.
【判断题】设随机变量X与Y相互独立, 且X服从正态分布N(1,2), Y服从Gamma分布Ga(1,2), 则随机变量X^2-2X+16Y+1服从Gamma分布Ga(3/2, 1/8).
A.
正确
B.
错误
【判断题】设随机变量X与Y相互独立, 且X服从正态分布N(1,2), Y服从Gamma分布Ga(1,2), 则随机变量X^2-2X+16Y服从Gamma分布Ga(3/2, 1/2).
A.
正确
B.
错误
相关题目：
【判断题】设随机变量X服从正态分布N(μ, σ^2 ),且P(X<2)=0.5,则μ=2.< /div>
A.
正确
B.
错误