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【简答题】
块规是一种长度标准器,它是一块钢质长方体,两端面磨平抛光,且精确地互相平行,两端面间的距离即长度标准.在图中, 是一合格块规, 是与 同规格待校准的块 规.校准装置如图所示,块规置于平台上,上面盖以平玻璃,平 玻璃与块规端面间形成空气劈.用波长 的光垂 直照射时,观察到两端面上有一组干涉条纹. (1)两组条纹的间距都是 试求 的长 度差; (2)如果两组条纹间距分别为 和 这表示 的加工除了长 度有误差外还有什么不合格?
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【单选题】My mum will cook ________ for the guests. [ ]
A.
something delicious
B.
delicious something
C.
anything delicious
【单选题】___________ that I want to eat another two.
A.
Such delicious cakes are they
B.
So delicious they are cakes
C.
Such delicious cakes they are
D.
So delicious cakes they are
【单选题】—Have you watched A Bite of China recently? —Of course.I do believe Chinese food is ____ in the world. A.the most delicious B.more delicious C.delicious
A.
the most delicious
B.
more delicious
C.
delicious
【单选题】What________this is!
A.
delicious coffee
B.
aDelicious coffee
C.
delicious a coffee
D.
theDelicious coffee
【单选题】Would you like ______? [ ]
A.
something delicious
B.
delicious something
C.
anything delicious
D.
delicious anything
【单选题】The restaurant serves________wine.
A.
French delicious white
B.
delicious white French
C.
white delicious French
D.
delicious French white
【单选题】What ______ this is!
A.
delicious coffee
B.
a delicious coffee
C.
delicious a coffee
D.
the delicious coffee
【简答题】管道或电缆深度太大,无法用窄频探测,可用 模式。
【简答题】I am combining the milk and cream into one container.
【单选题】钢构件的受剪连接中栓钉类型不同，孔洞对构件强度削弱的程度不同。孔洞对构件强度削弱最小的是()
A.
普通螺栓连接
B.
摩擦型高强度螺栓连接
C.
承压型高强度螺栓连接
D.
铆顶连接
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