某地区成年男子的身高X（单位：厘米）服从N(170,100)，以下结果正确的是 A: P(X>170)=0.5 B: P(X>180)=0.1587 C: P(X=170)=0.5 D: P(X>180)=0.4602 E: P(X>170)>0.5 F: P(X>180)=0.8413

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2022-10-26 问题

某地区成年男子的身高X（单位：厘米）服从N(170,100)，以下结果正确的是 A: P(X>170)=0.5 B: P(X>180)=0.1587 C: P(X=170)=0.5 D: P(X>180)=0.4602 E: P(X>170)>0.5 F: P(X>180)=0.8413

2021-04-14 问题

1A=uA/ananas/latex/p/575

2021-04-14 问题

已知变量x和y的协方差为-50，x的方差为170，y的方差为20，那么相关系数为

2022-10-27 问题

4.若有压圆管内水流为层流运动，则必有( )。 A: 9v/πdμ＜575 B: 9v/πdμ＜2300 C: 9v/πdv＜575 D: 9v/πdv＜2300

2022-06-17 问题

综合验光度数为:-7.00/-2.00×170,环曲面软镜度数是 A: -6.50/-2.00×170 B: -6.75/-2.00×170 C: -6.50/-1.75×170 D: -6.75/-1.75×170

2021-04-14 问题

VDR/S-VDR安装并经过正确配置后，需重新_____。575

2021-04-14 问题

正常胎心音是每分钟多少次? 110~160|110~170|120~170|130~170

2022-05-31 问题

Alana is not registered for sales tax purpose. She has recently received an invoice for goods for resale which cost $500 before sales tax, which is levied at 15%. The total value was therefore $575. What is the correct entry to be made in Alana's general ledger in respect of the invoice? A: Dr Purchases $500, Dr Sales tax $75, Cr Payables $575 B: Dr Purchases $575, Cr Sales tax $75, Cr Payables $500 C: Dr Purchases $500, Cr Payables $500 D: Dr Purchases $575, Cr Payables $575

Alana is not registered for sales tax purpose. She has recently received an invoice for goods for resale which cost $500 before sales tax, which is levied at 15%. The total value was therefore $575. What is the correct entry to be made in Alana's general ledger in respect of the invoice? A: Dr Purchases $500, Dr Sales tax $75, Cr Payables $575 B: Dr Purchases $575, Cr Sales tax $75, Cr Payables $500 C: Dr Purchases $500, Cr Payables $500 D: Dr Purchases $575, Cr Payables $575

2022-06-27 问题

一个p对极的三相交流线圈，两个有效边在空间的电角度为170°，则其对应的机械电角度为（） A: 170° B: p×170° C: 2p×170° D: 170°/p

2022-06-27 问题

一个p对极的三相交流线圈，两个有效边在空间的电角度为170°，则其对应的机械电角度为（） A: 170° B: p×170° C: 2p×170° D: 170°/p

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