【单选题】我们常说的500 hPa 气压层大概海拔高度为()
【简答题】The woman is blonde. The woman is sitting at the table.
【多选题】I= Interviewer: WI=Woman1 , W2= Woman 2, W3= Woman 3 . MI=Man 1,M2=Man2, Part 1 I: Hello and welcome to Fashion Now, with me, Dan Taylor. In today's program, we ask the question, "What is ( 1 ) [填空(1)...
【单选题】Choose the best choice according to the cultural context. While you are sitting on the bus with your American friend, a large woman with blonde hair gets on the bus. You tell your friend that you real...
A.
"That fat woman over there. "
B.
"That woman with blonde hair over there."
【单选题】图示曲柄连杆机构,已知曲柄 OA 长 L ,重量不计,连杆 AB 长 2 L ,重 P ,受矩为 M 的力偶和水平力F的作用,在图示位置平衡。若用虚位移原理求解,则必要的虚位移之间的关系为 ________ ,力 F 的大小为 ______________ 。