(单选题)13: 矩形截面梁当横截面的高度增加一倍、宽度较少一半时，从正应力强度考虑，该梁的承载能力变化为（ ） A: 不变； B: 增大一倍； C: 减少一半； D: 增大两倍。 ...

(单选题)7: 轴向拉伸或压缩时，外力或其合力的作用线沿杆件轴线，而杆件的主要变形则为轴向伸长或缩短。作用线沿杆件轴线的载荷称为 ，以轴向伸长或缩短为主要特征的变形形式称为 （ ）。 A: 轴向拉伸、轴向载荷； B: 轴向载荷、轴向变形； C: 轴向...

(单选题)1: 杠件被拉伸时，轴力的符号规定为正，称为（ ） A: 拉力； B: 压力； C: 正应力； D: 剪应力。 ...

(单选题)45: Do you feel like going jogging with me? A: I want to. B: It doesn’t matter. C: Let's enjoy it. D: I’d love to. ...

(单选题)39: His younger sister left home in 2011, and _______ ever since. A: has not been heard of B: had not been heard of C: has not heard of D: had not heard of ...

(单选题)27: — Paul, ____________________? — Oh, that’s my father! And beside him, my mother. A: what is the person over there B: who’s talking over there C: what are they doing D: which is that ...

(单选题)21: — Excuse me, when will the 17:15 train arrive?— _________ A: I don't tell you. B: It's been delayed one hour. C: You have to be patient. D: Don't ask me. ...

(单选题)15: ________ that she would make greater progress in her study of Italian. A: she is hoped B: it is hoped C: she was hoped D: it was hoped ...

(单选题)9: What is the train ________ to Birmingham? A: fee B: tip C: fare D: cost ...

(单选题)3: — What do you think of my dress? — ____________________ A: It’s on sale. B: It’s a birthday present for you. C: You really need one. D: It looks very good on you. ...