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【判断题】
从我国污染分布看,北方土壤污染明显重于南方。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】听力原文：W: Oh, dear, I'm tired of talking about the trip. M: So am I. The more we discuss the trip, the less likely it seems we can afford it. Q: What does the man mean? (10)
A.
The trip might be extremely tiring.
B.
They would like to take more trips.
C.
They've talked too much about the trip.
D.
The trip will probably be too expensive.
【简答题】显示 100 到 150 之间的所有素数。要求用主图和过程 isp 实现。过程 isp(m,f) 的功能是,判断整数 m ( m ≥ 2 )是否为素数,如果是素数,则 f 为 true ,否则 f 为 false 。
【简答题】图(a)所示电路中，L 1 =1H，L 2 =4H，M=2H，R 1 =R 2 =1Ω，U S =10V，电路为零状态。t=0时合上开关S。求i 1 及i 2 。
【简答题】图示电路中,已知:U S1 =30V,U S2 =24V,I S =1A,R 1 =6Ω,R 2 =12Ω,R 3 =12Ω。 用支路电流法求未知支路电流,I 1 =____A,I 2 =____A,I 3 =____A。 (此题为计算题,系统中仅提交答案,过程请写在作业本上)
【单选题】听力原文：W: Sam,you look pale as if you sat up late last night. M: Actually I went to bed earlier than usual.I am tired because I gave in to my son's earnest request and took him to the zoo yesterday. Q: ...
A.
He stayed up too late last night.
B.
He went to bed too early last night.
C.
He went to the zoo with his son yesterday.
D.
He worked overtime yesterday.
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