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【单选题】
第二节 完型填空 阅读下面短文,从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 Mrs. Green invited sonic of her friends【16】dinner. She wanted to cook a fish in a new way. She was very pleased with【17】when the dish was ready. She put it near tile open window to【18】for a few minutes. But live minutes later, when she came back for it, she was surprised to find the neighbour's cat at the dish. She quickly stopped the cat. That afternoon everyone enjoyed the dish. They talked and laughed【19】four o'clock. Then all her friends left. At the end of the afternoon, she felt happy. She was in a chair just near the window. She looked out of the window and【20】to see the neighbour's cat【21】in her garden. Why, the fish dish must be bad! What would happen【22】her friends? She telephoned the family doctor at once for help. The doctor told her to telephone【23】of the visitors to meet him at the hospital at once. Two hours later, the danger was over. Again Mrs. Green sat in her chair in the sitting-room. Just then the telephone rang.【24】was her neighbour. 'Oh, Mrs. Green,' her neighbour said, 'my cat is dead. Someone【25】it in a car and put it in your garden.' (16)
A.
have
B.
had
C.
to have
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【简答题】单回路变容二极管调相电路如习题7.14图所示。图中,C为高频旁路电容;变容二极管的U B =1V,变容指数B=2;回路等效品质因数Q=20;调制信号u Ω (t)=U Ωm cosΩtV。试求下列情况时的调相指数m p 和最大频偏。(1)U Ωm =0.1V,Ω=2π×10 3 rad/s;(2)U Ωm 0,Ω=4π×10 3 rad/s。
【多选题】三包规定中,涉及换货的情况有如下规定()。
A.
应当更换同型号、同规格商品
B.
销售者无同型号、同规格商品,消费者不愿调换其他型号规格的商品而要求退货的,销售者应当负责免费为消费者退货,并按发货票的价格一次退清货款
C.
换货时,应当提供新的商品
D.
换货后,商品三包有效期自换货之日起重新计算
【单选题】单频调制时,调频波的最大频偏Δf m 正比于 ( )
A.
. U Ω
B.
. u Ω (t)
C.
. Ω
D.
. U Ω / Ω
【单选题】单频调制时,调频波的最大频偏Δf m 正比于()
A.
U Ω
B.
u Ω (t)
C.
Ω
【多选题】下列关于孔子提出的君子小人之辨的思想是正确的
A.
君子比而不周,小人周而不比
B.
君子上达,小人下达
C.
君子喻于义,小人喻于利
D.
君子和而不同,小人同而不和
【单选题】单频调制时,调相波的最大相偏Δφ m 正比于
A.
U Ω
B.
U Ω (t)
C.
Ω
D.
以上皆不对
【单选题】单频调制时,调相波的最大相偏 Δφ m 正比于 ( )
A.
U Ω
B.
u Ω (t)
C.
Ω
D.
F
【判断题】“君子和而不同,小人同而不和。”是孔子提出的。
A.
正确
B.
错误
【多选题】下列关于孔子提出的君子小人之辨的思想是正确的
A.
君子比而不周,小人周而不比
B.
君子和而不同,小人同而不和
C.
君子上达,小人下达
D.
君子喻于义,小人喻于利
【单选题】孔子提出:“君子和而不同,小人同而不和”。这里的“和”指
A.
事物是普遍联系的
B.
有差别的二者之间的和谐统一
C.
不包含差别的二者之间的绝对统一
D.
事物是永恒发展的
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