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【简答题】
为什么沉木价值连城?
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皮皮学刷刷变学霸
举一反三
【单选题】关于Rc3/4的解释,正确的是
A.
非螺纹密封圆锥内管螺纹,尺寸代号3/4。
B.
螺纹密封圆锥内管螺纹,尺寸代号3/4。
C.
螺纹密封圆柱内管螺纹,尺寸代号3/4。
D.
螺纹密封圆锥外管螺纹,尺寸代号3/4。
【单选题】 The library________we’ll visit next week is not far from here.
A.
where
B.
in which
C.
which
D.
to which
【单选题】 The library________ at 5 o’clock every day.
A.
closes
B.
is closed
C.
is closing
D.
will be closed
【判断题】对于绝大多数包装来说,符号优先的表现手法是最原始、最基本、最能美化产品的设计手法。
A.
正确
B.
错误
【单选题】某患者,因胎膜早破入院。检查:头先露,未入盆。其余正常,错误护理措施是
A.
绝对卧床休息,禁灌肠
B.
休息时取半卧位
C.
严密观察胎心音
D.
严密观察流出羊水的性状
E.
指导孕妇自测胎动
【单选题】 He________be in the library because I saw him on the playground just now.
A.
mustn’t
B.
can’t
C.
may not
D.
isn’t able to
【单选题】 The librarian insists that Dana take ______ books from library before she returns the dictionary she borrowed last month.
A.
no
B.
many
C.
not many
D.
no more
【单选题】 The books ________ to the library are put back on the shelves immediately.
A.
returning
B.
returned
C.
which returned
D.
having returned
【简答题】{ Rc3/4,其中Rc表示____,3/4是表示____。此螺纹属于____(填“用”或“非”)螺纹密封的管螺纹。 }
【简答题】当光线由光密媒质射向光疏媒质时,其折射角将比入射角()
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