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调查对象是指根据调查目的确定的现象个体。( )
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[背景资料] 某城市道路工程，基层采用水泥稳定土，施工中的部分技术指标如下所述。 (1)选用初凝时间3h以下的32.5级水泥。 (2)水泥稳定土中的中粒土做基层时，水泥剂量不宜超过10%。 (3)施工最低气温为-5℃。 (4)基层保湿养护不宜小于3h。 (5)基层的压实厚度最多不超过30cm。 在该道路工程面层施工时，已进入冬期，施工项目经理部为此提出了应对措施。 [问题] 水泥稳定土路基层宜在哪个季节施工
The appeal of the world of work is first its freedom. The child is compelled to go to school: he is (21) of authority. As he grows up, he sees what it is to be free of school and to be able to choose his job and change it if he doesn’t like it. The boys and girls, (22) he has long observed, revisit school utterly changed and apparently mature. Suddenly teachers seem as out of date as his parents and the authority of school a ridiculous thing. At the moment the adult world may appear (23) the school world that the desire to enter it cannot be satisfied by exercises in school books. This may not be the (24) but it is a necessary part of growing up, for every man and woman must come sooner or later to the point of saying "Really, I’ve had enough of being taught; I must (25) ". Some young people come to this decision sooner than they ought. Yet in a way this is not a bad frame of mind to be in (26) leaving school. At work, the young man makes one of the first great acceptances of life——he accepts the discipline of the material or the process he is working with. He sees the point of it and in doing so (27) life. The work process constitutes a reality in some sense superior to that of school, and this is why he so often longs to get to grips with it. Nothing done in school imposes its will in (28) the same way; if the maths master is ill one can get on with something else. But even the boy delivering papers, (29) the driver taking out his bus, discovers that one cannot put it off because there is snow on the ground, or the foreman (工头) is easily annoyed, or he himself (30) that morning. 23（）
[背景资料] 某城市桥梁工程项目，施工人员在大体积墩台及其基础施工时的部分施工工艺和方法如下所述。 (1)在墩台基础中埋放了厚度为120mm的石块，且埋放的数量为混凝土结构体积的20%。 (2)在浇筑混凝土时选择了一天中气温较高时进行。 (3)在后张有黏结预应力混凝土结构时，预应力筋的孔道采用钢管抽芯方法进行预留。 (4)预应力筋锚固完毕并经检验合格后用电弧焊切割外露预应力筋。 (5)施工中预应力筋采用应力控制张拉，在校验伸长值时，实际伸长值与理论伸长值的差值为8%。 [问题] 请逐条判断大体积墩台及其基础施工时的部分施工工艺和方法是否妥当，如不妥，请改正。
由本国政府、股份公司和银行发行的代表信贷关系的债务凭证是股票。( )
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