皮皮学,免费搜题
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Get a FREE YEAR! Order NOW and get a FREE YEAR of Parents® magazine! That's 2 full years (24 issues) for the regular 1-year rate - just $12. But HURRY, this offer won't last! (U.S. orders only, please.) Every issue of PARENTS is filled with practical advice from leading doctors and child experts ... toys and games that develop reader-tested products and more! 100% Money-Back Guarantee: You must be pleased, or you may cancel any time during the life of your subscription and get all your money back - no questions asked. Parents® Magazine is published 12 times per year. Savings are based on $12.00 annual subscription rate. State taxes may apply to your order. E-mail address required to access your account and member benefits online. We will not share your e-mail address with anyone. Click here:  www.parents.com/privacy to view our privacy policy. 小题1:The purpose of the passage is ______. A.to introduce a new magazine B.to help parents with their daily life C.to attract more subscribers D.to collect more money for charity 小题2:Which of the following is true according to the ad? A.Only $12 is to be paid for 24 issues of the magazine B.Readers can get a free offer of the magazine any time of the year C.Readers from all over the world can enjoy the free offer D.Readers can communicate face to face with child experts on the Internet 小题3:A reader subscribed PARENTS 3 months ago, but now he finds the magazine dissatisfying. What can he do? A.He can cancel without getting your money back. B.He can cancel after answering a series of questions. C.He can e-mail them to access your bank account to get all your money back. D.He can cancel and get all money back without answering any questions.
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皮皮学刷刷变学霸
举一反三
【简答题】“统计”一词有三种涵义,即 ( )、( ) 及统计学。
【单选题】过共析钢与共析钢相比,等温转变图多了一条 线。
A.
A → F
B.
A → P
C.
A → B
D.
A → Fe 3 C
【单选题】统计一词一般有三种涵义,即统计工作、统计资料和
A.
统计总体
B.
统计信息
C.
统计学
D.
统计方法
【简答题】统计一词有三种涵义,即____、____和____。
【简答题】统计一词有三种涵义,即统计工作、统计资料和( )。
【单选题】a=[1 2 2],求a的转置 (________)
A.
[1 2 2 ]
B.
[1;2;2]
C.
[2 2 1]
D.
[2;2;1]
【单选题】过共析钢与共析钢相比,等温转变图多了一条 线。
A.
A→F
B.
A→P
C.
A→Fe 3 C
D.
A→B
【单选题】大批大量生产尺寸精度为 IT 7 ~ IT9 ,表面粗糙度为 Ra0.1 ~ 1.6 μ m 的孔,应选择的加工方案为( )
A.
粗铣
B.
粗刨
C.
粗磨
D.
钻 → 扩 → 拉
【简答题】a=[1 2 2] ,求 a 的转置 _______ 。
【简答题】统计一词有三种涵义,即统计工作、( )和( )。