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【单选题】
10V的实际电压源具有50Ω电阻的内阻。以下哪个负载可以使实际电源最接近于理想电源?A.
50Ω
B.
450Ω
C.
5000Ω
D.
以上均不是
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反馈参考答案：
举一反三
【单选题】When a number of people ______ together in a conversational knot, each individual expresses his position in the group by where he stands.
A.
accumulate
B.
pack
C.
squeeze
D.
cluster
【简答题】3 Fill in each blank with an appropriate phrase given below, changing the form if necessary. in spite of result in tap out make use of under way 1. They_______ animal bones, which they carve...
【简答题】Summary Although people may have 1 views about his most precious possession, all start with the valid knowledge about the human body. It is composed of a 2 of tiny specialists—cells. The cell has thre...
【简答题】. Cloze Read the following passage and fill the blanks with appropriate words from the list. Note that there are more words in the list than blanks in the passage. assume better complementary deriv...
【单选题】When a number of people ______ together in a conversational knot, each individual expresses his position in the group by where he stands.
A.
pad
B.
pack
C.
squeeze
D.
cluster
【单选题】新生儿产后感染性肺炎的特点,下列说法错误的是
A.
多在出生3天以后
B.
口吐白沫
C.
气急，鼻扇，吸气时三凹征阳性
D.
确诊靠肺部听到细湿啰音
E.
发热或体温不升
【单选题】When a number of people ______ together in a conversational knot, each individual expresses his position in the group where he stands.
A.
pad
B.
pack
C.
squeeze
D.
cluster
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