皮皮学,免费搜题
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搜题
【单选题】
非原始消化管来源的结构是( )
A.
结肠的上皮
B.
肝小叶
C.
胰腺腺泡
D.
小肠壁的肌层
E.
肺泡上皮
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【判断题】分度值为0.05mm的游标卡尺,其读数原理是尺身上20mm等于游标上19格的刻线宽度。
A.
正确
B.
错误
【单选题】以 20 等分游标卡尺为例,使用游标卡尺 测量零件时, 应先读整数,再读小数,看游标上的刻线,数出游标的第几条刻线 ( ) ,该数的 1/20=0.05mm 即为小数值。
A.
与 0 度刻线相对齐
B.
与主尺的刻线相对齐
C.
在 游标尺 零点的读数
D.
游标尺的 直接读数
【单选题】分度值为0.02mm的游标卡尺,当游标上的零刻线对齐尺身上20mm的刻线,游标上第50格刻线与 尺身上69mm的刻线对齐,此时读数值( )mm。
A.
20
B.
21
C.
19
D.
69
【单选题】Tom is a good boy. He's , too. [     ]
A.
good look
B.
handsome
C.
pretty
D.
beautiful
【单选题】He is such a good boy everyone likes.
A.
t hat
B.
it
C.
as
D.
what
【单选题】Peter is a good boy. He’s ,too.
A.
good look
B.
handsome
C.
pretty
D.
beautiful
【单选题】___ is a good boy.
A.
Him
B.
His
C.
He
D.
He's
【简答题】Xiao Ming is a middle school student. He is a good boy, and he studies very hard. But his family is very poor, because his mother got ill a few years ago, and his father has no job. He makes money by ...
【单选题】分度值为0.05mm的游标卡尺,游标刻线共20格,总长为()
A.
18mm
B.
20mm
C.
17mm
D.
19mm
【单选题】______ good boy he is! We have never seen such a good boy.
A.
How an
B.
What
C.
How
D.
What a
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