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【单选题】
R 1 、 R 2 相串联,已知 R 1 =3R 2 ,若 R 1 消耗的功率为 3 W ,则 R 2 上消耗的功率A.
W
B.
1 W
C.
3W
D.
9 W
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举一反三
【单选题】Listen to the rhythm of the following sentences. Which sentence has three stressed syllables?
A.
I think he ought to.
B.
Clean it with a brush.
C.
He wrote plays last year.
D.
Mary was coming at eleven.
【单选题】患儿男，6个月。因阵发性哭闹伴呕吐8小时来诊。查：体温36.5℃，腹部稍隆，右侧腹部可触及腊肠样肿块，有触痛，该小儿大便的特点是（）
A.
黏液便
B.
脓血便
C.
柏油样便
D.
陶土便
E.
果酱样血便指检时发现血便。
【单选题】患儿,男性,6个月。因阵发性哭闹伴呕吐8小时来诊。查体:体温36.5°C,腹部稍隆,右侧腹部可触及一腊肠样肿块,有触痛,直肠指检发现指套上染有果酱样粘液便。应首先考虑
A.
急性肠炎
B.
小肠扭转
C.
肠套叠
D.
阑尾脓肿
E.
肠蛔虫阻塞
【单选题】Listen to the rhythm of the following sentences. Which sentence has two stressed syllables?
A.
Finish it if you can.
B.
John likes pears.
C.
Sam works hard.
D.
Jack dances well.
【单选题】特殊感觉包括（）
A.
嗅觉，视觉，味觉，图形觉
B.
嗅觉，味觉，图形觉，听觉
C.
嗅觉，视觉，味觉，重量觉
D.
嗅觉，视觉，味觉，听觉
E.
嗅觉，味觉，图形觉，重量觉
【单选题】Listen to the rhythm of the following sentences. Which sentence has three stressed syllables?
A.
She ought to know the way by now.
B.
She’s gone for a walk in the park.
C.
Tell May to come early.
D.
I saw him standing all alone.
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