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【单选题】
( )不受钢种限制、处理温度低、时间短、变形小。目前普遍用于模具、量具、刃具和其他耐磨工件的最后热处理。A.
渗硼
B.
氮碳共渗
C.
铬
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举一反三
【单选题】—Do you think it's a good idea to make friends with your students? — ______________ ,I do. I think it's a good idea. [ ]
A.
Really
B.
Obviously
C.
Actually
D.
Generally
【单选题】．—How many students, do you think, will be present at the meeting? —I expect ____ 20 students at the meeting.
A.
there being
B.
there to be
C.
there be
D.
there been
【单选题】—Do you think it’s a good idea to make friends with your students ? -- ________,I do .I think it’s a great idea .
A.
Really
B.
Obviously
C.
Actually
D.
Generally
【单选题】—Do you think it’s a good idea to make friends with your students ? — ___________, I do. I think it’s a great idea.
A.
Informally
B.
Physically
C.
Actually
D.
Rarely
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