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【单选题】
四冲程发动机的工作循环是指( )。A.
进气-排气-做功-压缩
B.
进气-做功-压缩-排气
C.
进气-压缩-做功-排气
D.
排气-进气-压缩-做功
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皮皮学刷刷变学霸
举一反三
【单选题】Why did Mr. Teicher decide to give the tickets to the Brunses?
A.
Because Mr. Podesta told him to do so.
B.
Because he knew them before.
C.
Because they reminded him of his dad and his childhood.
D.
Because the Brunses asked him for the two tickets.
【单选题】What will Mr. Stein probably do next?
A.
Call Mr. Briggs
B.
Send a letter to Mr. Briggs
C.
Meet with Mr. Briggs
D.
Book a flight
【简答题】你能算算小袋鼠最后跳到了哪一格吗?
【单选题】Why did Mr. Stein make the call?
A.
He couldn't leave a message.
B.
He wodered why he han't received the order he placed before.
C.
He forgot the purchase order number.
D.
He wanted Mark to call him back.
【单选题】Why did Mr. Rochester bring Adele home?
A.
Because Celine died.
B.
Because Mr. Rochester liked Adele.
C.
Because Celine claimed Adele was Mr. Rochester's daughter.
D.
Because Mr. Rochester wanted a child.
【简答题】在下图所示电路中,已知 u I1 = 4V , u I2 = 1V 。试求出: ( 1 )当开关 S 闭合时,分别求解 A 、 B 、 C 、 D 和 u O 的电位; ( 2 )设 t = 0 时 S 打开,问经过多长时间 u O = 0 ?
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