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【单选题】
要求液压缸在中位卸荷,换向平稳,三位换向阀中位机能应该用A.
K型
B.
M型
C.
H型
D.
Y型
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【单选题】Mrs Wang is Tom’s mother. She is my aunt. Tom is my . [ ]
A.
cousin
B.
twin brother
C.
sister
【单选题】---Are those your parents, Tom? ---____________. They are my uncle and aunt.
A.
Yes, they are
B.
Yes, those are
C.
No, they aren’t
D.
No, those aren’t
【单选题】Tom is my father's brother. He is my ______. [ ]
A.
aunt
B.
uncle
C.
cousin
D.
mother
【单选题】Mrs Wang is Tom's mother. She is my aunt. Tom is my _________. [ ]
A.
cousin
B.
twin brother
C.
son
D.
uncle
【简答题】The house belongs to my aunt but she______ here any more. A. hasn't lived B. didn't live C. hadn't lived D. doesn't live
【简答题】作业1(量纲题).doc 运用量纲法计算下式中x、y、x的值。 (t为单摆的周期,k为系数,m为质量,l为弦长,g为)
【单选题】Mrs. Wang is Tom's mother. She is my aunt. Tom is my ______. [ ]
A.
cousin
B.
twin brother
C.
uncle
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