【单选题】听力原文:W: Excuse me, sir. Can you tell me how much it costs to send an airmail letter to Paris? M: That's one dollar if it is not overweight. W: How about postcards? M: That will cost you 80 cents. W: W...
【单选题】如图所示的悬臂梁,自由端受力偶M的作用,粱中性层上正应力σ及剪应力τ为 ( )。
【单选题】听力原文:W: Excuse me, sir. Can you show me your passport? M: All right. Q: What will the man do? (21)
【单选题】如图所示的悬臂梁,自由端受力偶m的作用,关于梁中性层上正应力【图片】及切应力【图片】的下列四种表述中,只有( )是正确的。【图片】
【单选题】如图所示的悬臂梁,自由端受力偶m的作用,关于梁中性层上正应力σ及切应力τ的下列四种表述中,只有()是正确的。
【单选题】听力原文:W: Excuse me, sir. Could you tell me where the post office is? M: Walk down the street for 2 blocks, the post office is right on the left-hand comer. Q: What do you learn from this conversation? ...
A.
The man is showing the woman around the city.
B.
The speakers are talking about sending letters.
C.
The man is a stranger to the city.
D.
The woman is asking the way.
【单选题】听力原文:W: Excuse me, sir. How do you wish to draw your money? M: Would you please give me hundred-yuan notes and the rest in small change? Q: Where is the conversation taking place? (14)
A.
In a department store.
C.
At the customs office.
【单选题】3--章已知栈S初始为空,对于一个符号序列a1、a2、a3、a4、a5(入栈次序也是该次序),当用I表示入栈、0表示出栈,则通过栈S得3章--到符号序列a2、a4、a5、a3、a1的操作序列为( )。
【判断题】在离接触网带电部分不到1.8m的建筑物上作业时,必须有可靠的防电措施。