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【简答题】
在一个横截面积为2.4×10 -6 m 2 的铜导线中,通过4.5A的电流,设铜导线内的电子密度n=8.4×10 28 m -3 ,求电子的漂移速度。
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举一反三
【简答题】A.Use beautiful words. B.Use words at random. C.Use words with passion and emotion. D.Use words with care and accuracy.
【单选题】People from the West like to use these words in cases ____ some people in Asia may not think it necessary.
A.
which
B.
that
C.
what
D.
Where
【简答题】当 MCS-51 引脚 信号有效时 , 表示从 Po 口稳定地送出了低 8 位地址
【单选题】理想的血压控制目标是 查看材料
A.
<160/95mmHg
B.
<140/90mmHg
C.
<140/85mmHg
D.
<135/85mmHg
E.
<125/75mmHg
【单选题】理想的血压控制目标是
A.
<160/95mmHg
B.
<140/90mmHg
C.
<140/85mmHg
D.
<135/85mmHg
E.
<125/75mmHg
【单选题】一般不会发生恶变的疾病是()
A.
口腔白斑
B.
复发性阿弗他溃疡
C.
口腔扁平苔藓
D.
口腔红斑
E.
盘状红斑狼疮
【单选题】急性肾小球肾炎继发肾性高血压的血压控制,尿蛋白<1g/24h,理想的血压控制目标是
A.
<160/95mmHg
B.
<140/90mmHg
C.
<140/85mmHg
D.
<135/85mmH
E.
<130/80mmHg
【简答题】In some languages,100 words make up half of all words ________(use) in daily conversations.
【简答题】In a coherent piece of writing, words and clauses are tied together in some ways. Use the following text to discuss what are some of the ways of tying together words and clauses to make a coherent pie...
【单选题】In some languages, 100 words make up half of all words _______in daily conversations.
A.
using
B.
to use
C.
having used
D.
used
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