多项选择题

前四史是指（） A. 《史记》 B. 《汉书》 C. 范晔《后汉书》 D. 陈寿《三国志》

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单项选择题

Which of the following sentences is not a simile?
A、O, my Luve's like a red, red rose.
B、Jim and his brother are as like as two peas.
C、Her lips were red, her looks were free, her locks (头发) were yellow as gold.
D、Jim looks like his brother Billy.

多项选择题

双筋截面梁一般适用于哪些情况（）

A.当构件所承受的弯矩较大，而加大截面尺寸或提高混凝土强度等级又受到限制时，用单筋梁无法满足设计要求，可采用双筋矩形截面梁
B.当构件在同一截面内承受变号弯矩作用时
C.由于构造原因在梁的受压区已配有受力钢筋时
D.由于经济条件限制时