以风险矩阵法进行危险评价时，应考虑（ ）两个方面因素。
A. 事故发生的可能性
B. 事故后果的严重程度等级
C. 事故类别
D. 事故伤亡人数
3.1.3 Which of the following is the right parenthesis?
A. Paul, on the other hand,is considered extremely trustworthy.
B. House prices in Alton, which is only 25 minutes from London,are soaring.
C. Mathematics, rightly viewed,possesses not only truth but supreme beauty.
Dave Bellamy (like his father, Peter Bellamy, last year) was victorious in this year's regional pie-making finals.
下列哪项不属于柱中箍筋的作用( )
A. 保证纵向钢筋的位置正确
B. 防止纵向钢筋受压时向外弯凸和混凝土保护层横向胀裂剥落
C. 抵抗剪力,提高柱的承载能力
D. 抵抗弯矩
下列哪项叙述是不正确的( )
A. 当柱内纵向钢筋采用绑扎搭接时,搭接长度范围内的箍筋应加密
B. 当柱内纵向钢筋采用绑扎搭接时,搭接长度范围内的箍筋,当钢筋受拉时,箍筋间距s不应大于5d, 且不应大于100mm
C. 当柱内纵向钢筋采用绑扎搭接时,搭接长度范围内的箍筋,当钢筋受压时,箍筋间距不应大于10d,且不应大于200mm
D. 当柱内纵向钢筋采用绑扎搭接时,搭接长度范围内的箍筋,当钢筋受压时,箍筋间距不应大于10d,且不应大于250mm
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