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【简答题】
Task 1 Match the words with its explanations. 1. uniform 2. waistcoat 3. jacket 4. plain 5. available 6. reference 7. vouch a) give personal assurance b) not busy and are free to talk or do a task. c) a special set of clothes which some people such as soldiers or police wear to work. d) a sleeveless piece of clothing with buttons that people usually wear over a shirt e) a short coat with long sleeves f) a fabric that is in one color and has no pattern, design, or writing on it. g) a letter that is written by someon1. e who knows you and which describe your personalities and abilities. 1. _________________ 2. _________________ 3. _________________ 4. _________________ 5. _________________ 6. _________________ 7. _________________
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【简答题】6-2-7 )如图 6.10 所示一阶电路,当t=0 时开关闭合, 当 时, 电容电压 ,则当若 时,电容电压的初始值 不变,可得电容电压 _______________V 。
【单选题】Conversation 1--- 4. What would Li Hua do with the money?
A.
Buy her parents a big house.
B.
Buy whatever she likes.
C.
Buy a restaurant to treat her friends.
D.
Buy herself expensive clothes.
【简答题】一阶电路如图, t = 0 开关闭合,闭合前电路为稳态,求 t ≥ 0 电流 i L(t) 、i C(t) 、 i (t) 。
【简答题】 外币折算