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问题 选择题

“关爱生命，拥抱健康”是永恒的主题。下列做法不利于人体健康的是[ ]

A．震后灾区饮用水应消毒处理后才能饮用

B．日常生活中应有合理的膳食结构，不挑食、不偏食

C．胃酸过多的病人应少喝汽水

D．香烟的过滤嘴可滤除一些有害物质，故吸烟对人体无害

答案

答案：D

单项选择题

On some projects, especially ones of smaller scope, activity sequencing, activity resource estimating. Activity duration estimating and (74) are so tightly linked that they are viewed as a single process that can be performed by a person over a relatively short period of time.

A．project planning

B．schedule development

C．cost estimating

D．time estimating
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单项选择题

某建筑物楼梯段的长度方向尺寸标注为“11×260=2860”，表示该梯段的步级数为（）。

A、11

B、12

C、13

D、14
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