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【判断题】
电子测量系统可提供有益于保险公司的打印A.
正确
B.
错误
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举一反三
【单选题】Lawrence Craven, a doctor from the USA, is the author of several published reports, one of which introduced the idea in 1953 ________ aspirin could reduce the risk of heart attacks by thinning blood.
A.
when
B.
where
C.
that
D.
which
【简答题】二极管是用一个PN结制成的半导体器件,它的最基本性质是 ,硅管的死区电压和正向压降比锗管 的 ,而反向饱和电流比锗管的 得多。
【单选题】What's the author's attitude towards the Asian flu? ______.
A.
He simply reports the disease objectively
B.
He is worried about the spread of the disease
C.
He is disappointed at the tests of the London doctors
D.
He believes that the disease will soon be controlled
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