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【简答题】
听下面一段独白,回答第1至第3三个小题。 1. When did the man most probably lose his wallet? A. When he was having dinner. B. When he walked into the restaurant. C. When he was ordering his dish. 2. Why was the man in a hurry? A. Because he had to meet his doctor. B. Because he wanted to report to the police. C. Because he had to go to the bank. 3. What was the man's biggest worry? A. He lost his ID card. B. He couldn't pay for the dinner. C. He got a lot of people included in his problem.
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参考答案:
举一反三
【单选题】箭头所指晶面是( )
A.
(211)
B.
(122)
C.
(212)
【简答题】接触网第一种工作票为白底()字体和格,用于接触网停电检修作业。
【简答题】复数F=a+jb;|F|和θ与a和b之间的关系是:a = (A、 |F|cosθ;B、|F|sinθ );b = (A、|F|cosθ;B、|F|sinθ)。
【简答题】接触网第一种工作票为白底()色字体和表格,用于接触网停电检修作业。
【单选题】痰液呈脓性,静止后出现分层现象提示()
A.
肺脓肿
B.
慢性支气管炎
C.
胸膜炎
D.
肺结核
【简答题】复数F=a+jb;其中 Re[F]= (A、a;B、b)。
【简答题】复数A=a+jb=r∠ψ,其中 表示复数的大小,称为复数的模。
【简答题】复数F=a+jb的模|F|= (A、 ; B、 );幅角θ= (A、arctan(b/a); B、arctan(a/b))。
【单选题】复数 等于 [     ]
A.
﹣1+i
B.
m+n>0,a>0,f(x)
C.
1﹣i
D.
F(m)+F(n)>0
【单选题】牛顿环现象体现了光的什么性质?
A.
粒子性
B.
波动性
C.
波粒二象性
D.
量子性
参考解析:
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