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【单选题】
对光纤参数驾驭测试,下列说法中不正确的是?
A.
为了准确测量损耗与色散,要求光纤中传播的模式处于稳态分布
B.
单模光纤的模场半径可以用来估算单模光纤的链接损耗以及弯曲损耗等
C.
截止波长的测量与待测光纤的长度无关
D.
光纤活动连接器的物理接触可大大减少菲涅尔反射损耗
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举一反三
【单选题】Barbara ______ in doing it again though she had failed more than a dozen times.
A.
consisted
B.
insisted
C.
persisted
D.
assisted
【单选题】John Julius Norwich is the author of more than a dozen books on Norman Sicily, the Sahara, Mount Athos and the Venetian and Byzantine empires. Yet even his immense knowledge is not euough to keep his ...
A.
cynical.
B.
comprehensive.
C.
partial.
D.
equivocal.
【单选题】Barbara ______ in doing it again though she had failed more than a dozen times.
A.
insisted
B.
persisted
C.
assisted
D.
consisted
【单选题】It can be inferred from the last paragraph that ______.
A.
More than a dozen states in US have anti-scalping laws of various kinds
B.
There are still legal worries about the American re-selling tickets for a profit
C.
Most states in US have yet to show positive response in crackdown on ticket touting
D.
16 companies were taken to court by one fan for reselling a ticket for more than $ 2 above face value
【单选题】足が棒になる( )歩いた。
A.
なんて
B.
くらい
C.
ほど
D.
ごろ
【单选题】No discount will be granted _ you place an order for more than 1000 dozen.
A.
if
B.
unless
C.
whether
D.
but for
【单选题】More than a dozen students in that school ________ abroad for further study every year.
A.
sent
B.
are sent
C.
have been sent
D.
have sent
【单选题】It can be inferred from the last paragraph that______.
A.
more than a dozen states in US have anti-scalping laws of various kinds
B.
there are still legal worries about the American re-selling tickets for a profit
C.
most states in US have yet to show positive response in crackdown on ticket touting
D.
16 companies were taken to court by one fan for reselling a ticket for more than $2 above face value
【单选题】患者女40岁,确诊SLE2年,因感冒、 肺部感染前来就诊,了解患者循环免疫复合物的试验是
A.
PEG沉淀试验
B.
抗Sm抗体
C.
抗RNP抗体
D.
抗核抗体
E.
抗SSA抗体
【单选题】(上海卷) 30. More than a dozen students in that school_______ around to study medicine last year.
A.
sent    
B.
were sent 
C.
had sent 
D.
had been sent
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