【单选题】Hello, everyone. Are you ready to class'?
【简答题】Hello, everyone. Because of the high rate of school violence (暴力) in some areas, agers’ safety becomes a serious problem. We are planning to set up an organization, or you can call it a group --- ...
【判断题】濒( b ī n )临 针砭( bi ā n ) 屏( bǐng )气 摒( bǐng )弃
【简答题】阅读理解。 Hello, everyone. Here is something important for everyone going to London next month. As you know, you are going to stay with a family for two weeks. Now, the most important thing is money. ...
【简答题】阅读短文,回答问题。 Hello, everyone. Here is something important for everyone going to London next month. As you know, you are going to stay with a family for two weeks. Now, the most important thing is money....
【简答题】PWM 控制技术包括单极性控制和 两种方式。
【单选题】下列加点字注音正确的一组( )
A.
濒临(bīn ) 华山(huá ) 相形见绌(chù ) 戕害(qiāng )
B.
卓越(zhuó) 良莠不齐(yǒu ) 折本(zhé ) 膝盖(qī )
C.
字帖(tiè ) 落枕(lào ) 恪守(kè ) 即使(jí )
D.
口供(gòng ) 创伤(chuàng ) 针砭(biān ) 给予(jí )
【单选题】鸡冠花下列描述正确的是:
B.
其花序为头状花序,有的象鸡冠,而有的却似凤尾,因此俗称凤尾花。
【判断题】一个函数如果有最值,则一定是在它的极值点处取到。