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【多选题】
目前FDM常用的打印材料ABS的优点有（ ）。A.
具有良好的力学性能，其冲击性强度极好
B.
较容易去支撑
C.
打印过程没有异味散发
D.
流动性好，打印产品不易裂开
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于混凝土构件中纵向受拉钢筋的锚固,下列四条中哪一条是错误的 ( )
A.
混凝土强度等级越高，钢筋的锚固长度越短
B.
钢筋强度等级越高，锚固长度越长
C.
钢筋直径越粗，锚固长度越短
D.
光面钢筋比带肋钢筋的锚固长度长
【单选题】________ of the ________ life in the city, Mr Blaster, with his wife and daughter, moved to the
A.
27. ________ of the ________ life in the city, Mr Blaster, with his wife and daughter, moved to the countryside. A．Tiring; boring
B.
Tired; bored
C.
Tiring; bored
D.
Tired, boring
【单选题】I think that his advice is well worth __ .
A.
valuing
B.
to be valued
C.
of being valued
D.
values
【单选题】在 Word 文档编辑中,可以删除插入点前字符的按键是 ()
A.
Ctrl+Backspace
B.
Backspace
C.
Delete
D.
Ctrl+Delete
【单选题】When he heard the news, his heart ______ very fast.
A.
stroke
B.
beat
C.
knocked
D.
Jumped
【单选题】He gave in to ______and opened the letter addressed to his sister.
A.
curiosity
B.
feeling
C.
worry
D.
hope
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