【判断题】目前 ,给予中国游客免签或落地签待遇的国家和地区已经达到82个,中国护照的“含金量”不断提高。
【单选题】听力原文:Listener: Hello, Professor, can you hear me? Professor W: Yes, we can hear you fine. Listener: My name is Humphries, Albert Humphries, and I live in Balham, in London. Professor W: Yes, good even...
A.
He has been going to an evening class and made many foreign friends.
B.
He has watched quite a lot of DVD.
C.
He has listened to the BBC radio programs.
D.
He has been going to an evening class and has watched quite a lot of the BBC TV programs.
【多选题】下列关于离合器的描述正确的有()。
A.
离合器压盘与离合器盖之间可以采用传动片连接。
C.
离合器结合过快,造成起步冲击,影响人生命安全,造成机件损坏。
D.
离合器分离不彻底,造成换挡困难,离合器磨损加剧,使离合器打滑。
E.
操纵机构中的机械、液压间隙和离合器分离间隙所对应的离合器踏板行程称离合器踏板自由行程。
【判断题】如图所示,三次抛出质点 A 时的速度方向不同,但大小相等,即 ,则质点 A 落地时速度大小相等。
【单选题】佝偻病是婴幼儿常见的营养缺乏病之一,其主要原因是( )以及膳食中缺少维生素D。
【判断题】离合器压盘与离合器盖之间可以采用传动片连接。