已知x=1是一元二次方程x2-2mx+1=0的一个解,则m的值是______.

题型:填空题

问题:

已知x=1是一元二次方程x2-2mx+1=0的一个解,则m的值是______.

考点:一元二次方程的解法
题型:填空题
选择方框内所给单词完成短文。
leaves, buy, thank, has, late, driver, school, cheap, something,
early, closed, friendly, floor, help, sell, dear, worry, evening
     Lin Hong is my new friend. Her father _____ (1) a shop near the factory. The things in his shop are
all _____ (2). And his family are _____ (3) to the workers. So they like to buy _____ (4) there.
     It's Saturday today. Lin Hong doesn't go to _____ (5). She knows her father is busy and gets up
_____ (6). She finishes her homework and then goes to the shop to _____ (7) her father. There're many
people in it and she begins to _____ (8) pears, apples, oranges and drinks to the workers.
     A car stops near the shop. The _____ (9) comes in and buys some cakes and then _____ (10). Lin
Hong finds his bag on the _____ (11). She runs with it, but she can't see his car. 
     "Don't _____ (12)," says Mr. Lin. "I know Mr. Yang. We can take it to him this _____ (13)."
     It's nine and the shop is _____ (14). Lin Hong is tired. Lin Hong and her father go to Mr. Yang's.
The man and his family _____ (15) them very much.
题型:填空题

患者男性,32岁。婚后3年不育,做精液常规检查。

患者精液生化检查结果中,不正常的是()

A.精浆果糖11.5mmol/L

B.精浆乳酸脱氢酶-X相对活性26.8%

C.精子顶替酶活性38.4U/L

D.精浆酸性磷酸酶232U/ml

E.精浆锌186μg/ml

题型:填空题

以下哪一个最好的描述了数字证书()

A.等同于在网络上证明个人和公司身份的身份证

B.浏览器的一标准特性,它使得黑客不能得知用户的身份

C.网站要求用户使用用户名和密码登陆的安全机制

D.伴随在线交易证明购买的收据

题型:填空题

隔离式自救器的作用是防止遇险人员因缺氧发生窒息和防止发生有害气体中毒。()

题型:填空题

在哪些情况下,当事人可以要求返还彩礼?

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