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【单选题】
万能工具显微镜测量长度应先( )A.
将角度示值调为零度
B.
将米字线的中间线瞄准
C.
工件移动Y方向
D.
移动X方向
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皮皮学刷刷变学霸
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【简答题】Henry I like dogs because they are so cute. Sometimes they play with you. How happy! They are our friends. So I enjoy watching animal shows about dogs on TV. Julia I don’t like dogs because they...
【单选题】偏心压缩时,截面的中性轴与外力作用点位于截面形心的两侧,则外力作用点到形心之矩e和中性轴到形心距离d之间的关系有四种答案:
A.
e=d
B.
e>d
C.
e越小，d越大
D.
e越大，d越小
【单选题】I like dogs because they are ________ friendly.
A.
a kind of
B.
kind of
C.
kinds of
D.
a kinds of
【单选题】I like dogs, because they are ____ and cute. [ ]
A.
friends
B.
friendly
C.
friend
D.
friendship
【简答题】I like dogs because they have families and are ________ for what they get.
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