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【单选题】
对于直径较小或齿根圆到键槽顶部距离y<2.5m的钢制齿轮,常选用的齿轮结构为( )A.
齿轮轴
B.
实心式齿轮
C.
腹板式齿轮
D.
轮辐式齿轮
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举一反三
【单选题】This song is about someone__________ .
A.
who cheats his girlfriend
B.
breaking up with a man who was not good
【单选题】This song is about missing one’s home and really __________ with a lot of people who feel the same way.
A.
Induces
B.
Pulls on the heartstrings
C.
Preaches to the converted
D.
Resonates
【简答题】have you ever seen a
【单选题】人类白化症是常染色体单基因隐性遗传病,这意味着白化症患者的双亲必须
A.
双亲都是白化症患者
B.
双亲之一是携携带者
C.
双亲都是纯合体
D.
双亲都是致病基因携带者 双亲都是致病基因携带者
【判断题】This song is about a man who feels guilty in the relationship with two women at the same time.
A.
正确
B.
错误
【单选题】This song is popular____ the students and they are crazy____ singing it. A. B. about, of C. D.
A.
with, about
B.
about, of
C.
by, on
D.
with, in
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