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【单选题】
热处理是将钢在固态下采用的适当的方式进行( ),以获得所需组织和性能的工艺。
A.
加热、保温和冷却
B.
保温、冷却和加热
C.
加热、冷却和加热
D.
通入大电流
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举一反三
【单选题】O'Neal works hard. He is often seen _______ heavily before his teammates have even arrived at practice.
A.
sweated
B.
to be sweated
C.
sweating
D.
being sweated
【单选题】某一反应的活化能为 65KJ · mol -1 ,则其逆反应的活化能为
A.
65kJ·mol-1
B.
-65kJ·mol-1
C.
0
D.
无法确定
【单选题】促进红细胞成熟的主要因素是( )
A.
红细胞提取物
B.
促红细胞生成素
C.
维生素B12及叶酸
D.
雌激素
E.
内因子
【单选题】( )(改编)Stephen often practices English________ chatting with his American friend.
A.
in
B.
by
C.
for
D.
with
【单选题】Stephen: I want to send this package parcel post, registered. Clerk: ______ ? Stephen: Yes, please, for sixty dollars.
A.
Do you want it guaranteed
B.
Do you want it insured
C.
Do you want it preserved
D.
Do you want it ensured
【单选题】(改编题)Stephen often practices English________ chatting with his American friend.
A.
in
B.
by
C.
for
D.
with
【多选题】EPO的造血作用主要包括
A.
刺激造血干细胞向红系方向发展
B.
促进幼红细胞分化成熟
C.
促进幼红细胞形成血红蛋白
D.
减少红系祖细胞凋亡的比例
E.
延长红细胞的寿命
【单选题】Stephen often practices English_____ chatting with his American friend.
A.
in
B.
by
C.
for
D.
with
【简答题】______ she first heard of the man referred to as a specialist. A) That was from Stephen              B) It was Stephen whom C) It was from Stephen that             D) It was Stephen that
【单选题】促进红细胞成熟的主要激素
A.
肾素
B.
雌激素
C.
生长素
D.
甲状腺素
E.
促红细胞生成素
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