皮皮学，免费搜题
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【单选题】
以下哪项是多媒体教室系统的核心?A.
多媒体计算机
B.
音响系统
C.
中央控制系统
D.
电子讲台
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】以下表述中错误的是 ?
A.
共振论是用经典结构式表述复杂的离域体系
B.
任何极限结构都能代表真实分子
C.
只有共振杂化体才能确切反应一个分子、离子或自由基的真实结构
D.
一个分子写的极限结构式越多,说明电子离域可能性越大,该分子越稳定
【简答题】一个分子或离子可以用两个或两个以上只是电子位置不同的Lewis 即共振式表示,共振式的群体或共振杂化体而非任何一个共振式代表分子或离子的真实结构。
【单选题】某个CPU的标签上标有LGA775字样,以下说法正确的是
A.
该CPU的前端总线频率为775兆赫兹
B.
该CPU的主频为775M赫兹
C.
该CPU为触点式CPU，共有775个触点
D.
该CPU为插针式CPU，共有775个信号引脚
【单选题】听力原文：We are a new and growing firm in the area. And we're willing to do our best to attract customers away from our competitors with more favorable terms. (29)
A.
We cannot compete with our rivals, since we have just started our business here.
B.
We want to have more customers, so we're ready to make more favourable offers.
C.
We are unable to provide the best service here, because we do not have enough competitive advantage.
D.
We plan to merge our competitors in this area, as we are growing and have more customers.
【简答题】The child is always (willing) ______ to do his homework, so he has not made much progress.
【单选题】Li: Well, Chinese food divided into 8 kinds of cuisines, such as Cantonese food, Shandong food, Sichuan food etc. Which kind dish you like? Wang: Are there any difference?
A.
do
B.
are
C.
would
D.
did
【简答题】连杆由小头、杆身和 _____ 三部分组成。连杆 与活塞销相连。
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