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【单选题】
可引起呕血表明A.
消化道出血，每日出血量10ml
B.
消化道出血，每日出血量100ml
C.
消化道出血，胃内血量300ml
D.
消化道出血，一日出血量>1200ml
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举一反三
【单选题】关于铣床主轴轴肩支撑面跳动的精度检测,说法正确的是( )。
A.
将百分表测头触及主轴前端靠近边缘的位置，旋转主轴，分别在相隔180°两点，分别计算百分表读数的最大差值
B.
将百分表测头触及轴肩支承面外圆上，旋转主轴
C.
将百分表测头触及轴肩支承面，在轴向加推力检验，百分表最大读数
D.
主轴轴肩支承面的跳动允许值为0.04mm
【单选题】What does the author imply by saying '…is far less abstract in Hawaii than in other places' (Line 2, Para. 4)?
A.
Hawaii is much safer than other places.
B.
Hawaii is not frightened by extinction.
C.
Hawaii has tried its best to reserve the land.
D.
Hawaii has gone through much extinction.
【单选题】Mauna Kea in Hawaii: Astronomy on the World's Highest Island Mountain Four thousand years ago, a volcano exploded in a far away area of the Pacific Ocean. Today, the Mauna Kea volcano is inactive. It ...
A.
Y
B.
N
C.
NG
【简答题】What did people do to protect themselves against the tsunami in Hawaii?
【单选题】What of the following is the most common activity in Hawaii?
A.
judo
B.
play table tennis
C.
surfing
D.
soccer
【单选题】According to the video, what was one of the main feature of the Rockefeller Hotel in Hawaii?
A.
It si one of the oldest hotels.
B.
It is the most beautiful hotel.
C.
It is eco-friendly hotel.
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