若关于x的方程2x2-ax+a-2=0 有两个相等的实根,则a的值是( )。

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问题:

若关于x的方程2x2-ax+a-2=0 有两个相等的实根,则a的值是(     )。

考点:一元二次方程根与系数的关系
题型:填空题

阅读理解,判断正(√)误(×)。

      My family has four members. My dad, my mom, my brother and me. My dad is a baseball player. He is

tall and strong. He likes computer games. My mom is a nurse. She has long hair and big eyes. My brother is

thin. He is ten. He likes Chinese and music. He listens to music every day (每天).

( ) 1. My family has five members.

( ) 2. My brother is tall and strong.

( ) 3. My brother likes Chinese and music.

( ) 4. My father is a baseball player.

( ) 5. My mother likes computer games.

题型:填空题

一男性,24岁,劳动中突然发生剧烈头痛,呕吐和意识不清。体检:浅昏迷,血压120/80mmHg,体温37℃,颈抵抗、颏胸距4横指,凯尔尼格(Kernig)征阳性。右上眼睑轻度下垂,右眼球处于外侧位,右侧瞳孔4mm,对光反应迟钝,左侧艟孔2mm,对光反应灵敏。左肢体活动差,左侧巴宾斯基征阳性。诊断为蛛网膜下腔出血。

深昏迷区别于浅昏迷的最有价值的特点是()

A.无任何自主运动

B.全身反射消失

C.不能被唤醒

D.大小便失禁

E.肌肉松弛

题型:填空题
下列求导运算正确的是(  )
A.(2x)′=x•2x-1
B.(3ex)′=3ex
C.(x2-
1
x
)′=2x-
1
x2
D.(
x
cosx
)′=
cosx-xsinx
(cosx)2
题型:填空题

信贷精细化管理实施方案明确了贷款定价管理精细化要求,下列哪些因素是贷款定价的基本依据()。

A.资金成本

B.贷款风险度

C.客户的综合回报水平

D.贷款额度

题型:填空题

LRRA系统共有()个天线

A.1个

B.2个

C.3个

D.4个

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