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【单选题】
光镜下心肌纤维与骨骼肌纤维区别，哪一项是错误的A.
二种肌纤维的大小和粗细不同
B.
心肌纤维没有横纹
C.
骨骼肌纤维没有闰盘
D.
骨骼肌含有多个核，位于周边，心肌纤维有一二个胞核，位于中央
E.
骨骼肌纤维没有分支，心肌纤维有分支
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皮皮学刷刷变学霸
举一反三
【单选题】When Bob bent down, he was trying to（）
A.
pick up a watch
B.
hide the fact that he had found the watch
C.
pick up the watch that has slipped off his wrist
D.
pretend that he had found the watch
【单选题】When he bent down to tie his showlace, The belt of his trousers_______.
A.
ruined
B.
cracked
C.
broke
D.
split
【简答题】车螺纹时,表面成形运动有( )个,属于 ( ) 成形运动。(简单/复合)
【单选题】B. Choose the best answer and complete the passage ( 选择最恰当的选项完成短文 ) (6 分 ) ( 词数: 304) One evening I was resting in a cafe. I 7 a pair of newly bought white shoes, which were rather expensive. Then a b...
A.
took
B.
wore
C.
fixed
D.
owned
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