皮皮学,免费搜题
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搜题
【单选题】
实践是认识的来源表明( )
A.
一切真知获得都必须自己亲自实践
B.
既可以通过实践也可以通过学习获得
C.
直接经验来源于实践,间接经验来源于书本
D.
无论是直接还是间接经验都来自于实践
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举一反三
【单选题】具有抗早孕作用的药是
A.
地诺前列素
B.
二氢麦角碱
C.
缩宫素
D.
麦角新碱
E.
垂体后叶素
【单选题】It can be inferred from the passage that in some countries ______ .
A.
it is common to wait for an hour for an appointment
B.
explanations for being late are cut short
C.
apologies are never made for being late
D.
people are irresponsible
【单选题】I can _____ the violin . I like _____ the violin. [     ]
A.
play , play
B.
play , playing
C.
playing , play
【单选题】具有抗早孕作用的药是
A.
地诺前列素
B.
缩宫素
C.
垂体后叶素
D.
麦角新碱
E.
以上均可
【判断题】车用无铅汽油10%蒸发温度决定其低温启动性和形成气阻的倾向。
A.
正确
B.
错误
【单选题】In some cities it is very difficult to have a telephone _____ , and people have to wait a long time before they can get a phone.
A.
assembled
B.
installed
C.
equipped
D.
repaired
【单选题】I’m really tired_____Tom . He had me _____for two hours in the rain . A.of, waitingB.with , wait
A.
14. I’m really tired_____Tom . He had me _____for two hours in the rain . A.of, waiting
B.
with , wait
C.
of, waited
D.
with, waited
【单选题】Last year, I liked playing volleyball, but now I get used to ______. [     ]
A.
going swimming
B.
playing guitar
C.
listen to music
【单选题】串行异步通信的实现必须做到()
A.
通信双方有同步时钟传送,以实现同步
B.
一块数据传送结束时,用循环冗余校验码进行校验
C.
以字符为传送信息的单位,按约定配上起始位、停止位和校验位
D.
块与块之间用同步字符01111110隔开
【多选题】关于消费者均衡点的下列看法中正确的有
A.
均衡点位于预算约束线上
B.
消费者均衡点在理论上可以脱离预算约束线而存在
C.
均衡点由预算线和无差异曲线的切点决定
D.
在消费者均衡点上,预算约束线与无差异曲线斜率相等但符号相反
E.
在消费者均衡点上,预算约束线与无差异曲线斜率相等且符号相同
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