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【单选题】
光纤规格50/125中的50代表( )。A.
光纤内芯的直径
B.
光纤包层直径
C.
光纤中允许通过的光波波长
D.
允许通过的最高频率
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】测量外圆锥体时,将工件的小端立在检验平板上,两量棒放在平板上紧靠工件,用外径千分尺测量出两量棒之间的距离,通过( )即可间接测出工件小端直径。
A.
换算
B.
测量
C.
比较
D.
调整
【单选题】Why do some students have to navigate school bureaucracy by themselves?
A.
No one else cares about that.
B.
Their parents don't know English.
C.
Their parents have limited time.
D.
Only students are allowed to do that.
【简答题】简述马斯洛市要层次理论的营销应用。
【单选题】听力原文： Why do some students do better than others? To find out, Reader's Digest invited 2,130 high-school seniors to take a special academic test and then answer a list of personal questions. Among the...
A.
They are more pessimistic than we think.
B.
About four out of five young people are satisfied with their family life.
C.
They work much harder than before.
D.
They are not very confident about their future and the society.
【单选题】测量外圆锥体时，将工件的小端立在检验平板上，两量棒放在平板上紧靠工件，用千分尺测出两量棒之间的距离，通过( )即可间接测出工件小端直径。
A.
换算
B.
测量
C.
比较
【单选题】听力原文： Why do some students do better than others? To find out, Reader's Digest invited 2,130 high-school seniors to take a special academic test and then answer a list of personal questions. Among the...
A.
They are more pessimistic than we think.
B.
About four out of five young people are satisfied with their family life.
C.
They work much harder than before.
D.
They are not very confident about their future and the society.
相关题目：
【单选题】测量外圆锥体时,将工件的小端立在检验平板上,两量棒放在平板上紧靠工件,用外径千分尺测量出两量棒之间的距离,通过( )即可间接测出工件小端直径。
A.
换算
B.
测量
C.
比较
D.
调整