概念与名次解释[tex=4.071x1.286]+EkwiN1K2IrYFgRn8sxQiQ==[/tex]
举一反三
- 概念与名词解释[tex=4.071x1.286]tBZ4T6fOIpsjTSOe86mOXQ==[/tex]
- 从两个总体中各抽取一个 [tex=6.143x1.286]XUNMa/Gc+W6WKEG524ad/roCwlTza4YeRHg3W4b/blU=[/tex] 的独立随机样本,来自总体1的样本比率为 [tex=4.071x1.286]SgnO/liM8lXfy1hTJpZc/8/EiTJuq0d/cdmHVrKdr9Y=[/tex] ,来自总体2的样本比率为 [tex=4.071x1.286]0fzpiHX9lpu5o7mtHBi8b2pgzerfzuQSUHC2hS/vE2Q=[/tex] 。构造 [tex=5.857x1.286]0EyfhITEvnngpFk0Tj3wkSxQEYvoZfiA/shOMeg46cv1j0raWpwK7xJg8iFsbohl[/tex] 的置信区间。
- 概念与名词解释[tex=4.571x1.286]k/DK4uQV5mGgH1U5gMXgz+rId47q3yZDNIC1dZk6C34=[/tex]
- 桶四线制电路,电源线电压为[tex=2.214x1.286]/jYr7pgMlBxu23Y+yPQP4w==[/tex],不对称星形联结负载,各相复阻抗为[tex=4.071x1.286]8sF9Iuck2te9mZqcrwL3yfD2amRHuk6jWQa0E/vOutc=[/tex],[tex=4.071x1.286]eG1W0vrkM1CwKmS/qyNCcX9sr4lsA1+/BEfWytPfBuw=[/tex],[tex=4.071x1.286]W4+lhs1bukMPAIQPgZZS8JXxcOf7QMdm4+DqlWEAx5w=[/tex].试计算:(1)中性线正常时各相负载电压、电流和中性线电流;(2)中性线断开时,各相负载的电压和电流.
- 一个晚会的节目有4个舞蹈,2个相声,3个独唱,舞蹈节目不能连续出场,则节目的出场顺序有( )种。 未知类型:{'options': ['[tex=4.071x1.286]jo8hARCI8N4rqpUjPGyT9sbduvtcDZnYuPQTlaxiOzY=[/tex]', '[tex=4.071x1.286]jo8hARCI8N4rqpUjPGyT9nGoS1hYJtrPw6p95WIEUlE=[/tex]', '[tex=4.071x1.286]jo8hARCI8N4rqpUjPGyT9kuQBsduYwjGCv40iI6hLhM=[/tex]', '[tex=4.071x1.286]jo8hARCI8N4rqpUjPGyT9uRIjMNC5mZYe0IqE7XWqb0=[/tex]', '[tex=4.071x1.286]jo8hARCI8N4rqpUjPGyT9vj8DOxLHmkmL50907IwvKs=[/tex]'], 'type': 102}