【单选题】---It ______ be only two days before I have the job interview. ---______ you succeed.
【单选题】听力原文:I wonder if you can give me a hand right now. (A) Sorry, I only have two hands. (B) Of course I can. Here you are. (C) Certainly. What can l do to help you? (35)
【多选题】对力的基本概念表述正确的是( )。
C.
根据力的可传性原理,力的大小、方向不变,作用点发生改变,力对刚体的作用效应不变
D.
力的三要素中,力的任一要素发生改变时,都会对物体产生不同的效果
E.
在国际单位制中,力的单位为牛顿(N)或千牛顿(kN)
【单选题】听力原文:How many of those black markers do we have left? (A) There are only two, I think. (B) I also have a blue one. (C) He said to check on the right side. (21)
【单选题】关于力的概念,下面哪个说法是不正确的?
D.
力是一个既有大小又有方向的量,因此,力是矢量
【判断题】客流指在单位时间内轨道交通线路上乘客流动人数和流动方向的总和。客流的概念既表明了乘客在空间上的位移及数量,又强调了这种位移带有方向性和具有起讫位置。客流可以是预测客流,也可以是实际客流。
【简答题】泊松过程是一个()过程, 表示[0,t)区间内到达的用户总数,同时也是一个()过程,在两个不同时间区间内到达的用户数相互独立。
【单选题】当基础应计算混凝土运输脚手架时,按满堂脚手架基本层定额乘系数( )。
【单选题】听力原文:M: Henry has four classes on Wednesday and Peter has three. W: I only have two, but I have five on Thursday. Q: How many classes does the woman have on Wednesday? (5)
【单选题】听力原文:M: Do you have any money you could loan me? W: I wish I could. Now I have only two dollars till the end of the week. Will the man borrow any money from the woman?
A.
Yes, because she has two dollars.
B.
Yes, because she wants to help him.
C.
No, because she will need the money this week.
D.
No, because she doesn't want to lend him the money.