【单选题】Firms that use computers have found that the number of staff______ is neeced for quality control can be substantially reduced.
【单选题】From this material we can ______ hundreds of what you may call direct products.
【单选题】The number of staff has ______ from 217,000 to 114,000.
【单选题】Firms that use computers have found that the number of staff _____ is needed for quality control can be greatly reduced.
【单选题】下列关于热量传递的说法中错误的是( )
A.
热量传递有三种基本方式,即热传导、热对流和热辐射
B.
热传导属于接触传热 , 是连续介质就地传递热量而又没有各部分之间相对的宏观位移的一种传热方式
D.
通风孔洞面积越大,热对流的速度越快 ; 通风孔洞所处位置越高,对流速度越快
【单选题】关于岩溶地区的路基设计,下列说法错误的是( )。
A.
设计时主要的考虑因素包括溶洞的位置、大小和稳定性,还包括路基附近的地面水和地下水
B.
常用的处理措施类型有疏导、填塞、跨越和加固等四种
C.
对于岩溶水的处理应本着能导则导,能堵则堵,因地制宜的原则
D.
加固主要用以防止基底溶洞的坍塌和岩溶水的渗漏
【单选题】化学已渗透人类生活的各个方面。下列说法不正确的是
A.
高纯度的硅单质广泛用于制作光导纤维,光导纤维遇强碱会“断路”
B.
“光化学烟雾”、“自氧空洞”的形成都与氮氧化合物有关
C.
低碳生活注重节能减排,尽量使用太阳能等代替化石燃料,减少温室气体的排放
D.
高铁酸钾(K 2 FeO 4 )是新型高效多功能水处理剂,既能消毒杀菌又能净水
【单选题】听力原文:W: What a shame about your accident! What a way to end your holiday! M: Yes, it was bad luck. I suppose I should have been more careful. What are they talking about?
【单选题】From this material we can ______ hundreds of what you may call direct products.
【简答题】听力原文:Conversation 1 F: Hello, this is First Direct, how can I help you? M: This is Ahmed Aziz speaking. Er, I'm interested in opening an account with you, but I have a couple of questions. F: What exa...