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【单选题】
滚动轴承的代号为215，其中的15表示（）A.
轴承外径75mm
B.
轴承外径15mm
C.
轴承内径15mm
D.
轴承内径75mm
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【单选题】When I arrived home, my mother____the dinner.
A.
cook
B.
is cooking
C.
was cooking
D.
would cook
【单选题】When I arrived home, my mother ___the dinner.
A.
cooked
B.
is cooking
C.
was cooking
D.
would cook
【简答题】December 24 arrived along with a heavy snow. It was my first Christmas Eve without my mother, and the day’s usual 36 had disappeared. The telephone rang. I 37 it and went to my bedroom to bury the con...
【简答题】A．增讲 B．增减 C．加强 D．增强
【单选题】男性，16岁，因吃不洁食物而腹泻，3～5次/d，糊状，有少许粘液，无里急后重，排便前腹痛，便后缓解，服用抗生素后好转。该类腹泻的发病机制主要属于
A.
分泌性腹泻
B.
渗出性腹泻
C.
渗透性腹泻
D.
吸收不良性腹泻
【单选题】男性,16岁,因吃不洁食物而腹泻,3~5次/d,糊状,有少许粘液,无里急后重,排便前腹痛,便后缓解,服用抗生素后好转。该类腹泻的发病机制主要属于
A.
分泌性腹泻
B.
渗出性腹泻
C.
渗透性腹泻
D.
吸收不良性腹泻
E.
肠蠕动增强性腹泻
【单选题】when I arrived home ,my mother ( )the dinner.
A.
cooked
B.
is cooking
C.
was cooking
D.
would cook
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