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【单选题】
单位离心力场下的沉降速度是指A.
向心速度
B.
离心速度
C.
沉降系数
D.
上浮速度
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举一反三
【单选题】Why doesn’t Betsy look so well?
A.
She hasn’t been sleeping well recently .
B.
She hasn’t been eating well recently.
C.
S he hasn’t been doing any physical exercise recently .
【单选题】 Yesterday we called at________.
A.
my uncle
B.
a friends of my uncle’s
C.
my aunts’
D.
Mary’s sister’s
【单选题】Yesterday we called at where we met a parade of socialites , reality TV stars , models and B-list actors .
A.
my uncle
B.
a friend of my uncle’s
C.
my aunts’
D.
Mary’s sister’s
【单选题】Yesterday we called at ____.
A.
my uncle's
B.
a friend of my uncle's
C.
my aunts'
D.
Mary's sister's
【单选题】Why doesn’t Betsy look so well?
A.
She hasn’t been eating well recently.
B.
She hasn’t been sleeping well recently.
C.
She hasn’t been doing any physical exercise recently.
【简答题】Why doesn’t Betsy look so well?
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