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【多选题】
一个典型的机电一体化系统,应包含以下几个基本要素:A.
机械本体
B.
动力源
C.
执行机构
D.
控制及信息处理部分
E.
检测和传感装置
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反馈参考答案：
举一反三
【单选题】The teacher told him that he would have _____ if he______. [ ]
A.
better lives, work hard
B.
a better life, work ard
C.
better life, works hard
D.
a better life, worked hard
【多选题】W18Cr4V钢一般( )
A.
最终热处理采用淬火+多次高温回火
B.
正火
C.
最终组织为回火马氏体，碳化物，少量残余奥氏体
D.
不进行最终热处理
E.
铸造成型后再锻打击碎鱼骨状合金碳化物
【单选题】More than one teacher told him it is important to learn English well if he abroad.
A.
had; wi l l go
B.
has; wants to go
C.
has; want to go
D.
have; shall go
【单选题】母猪难产,注射催产素后,产出仔猪软弱无力、可视粘膜发绀或苍白、呼吸极度微弱。对仔猪采取的首要措施是(2017 真题下110)
A.
擦干体表胎水,诱发呼吸反射
B.
擦干体表胎水,保温
C.
擦净鼻孔、口腔内的胎水,诱发呼吸反射
D.
立即进行人工呼吸
E.
腹腔注射葡萄糖溶液
【单选题】The teacher told the students that the earth_____round he sun.
A.
move
B.
moves
C.
moved
D.
had moved
【单选题】His teacher told him that he ____ translate the sentence word for word.
A.
needed not
B.
doesn’t need to
C.
didn’t need
D.
needn’t
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