题目详情:
Passage 2
Forty years ago no one was concerned about the health of the ocean, in spite of the fact that many fisheries were being over harvested, toxic wastes were being dumped in the sea, and developers were beginning to seriously disrupt coastlines. In those days, the magnitude of the problems was small, even though it was obvious that if the trends continued people would face severe economic and personal hardship in the future. People just didn’t understand, nor did they care. Unfortunately many of our concerns were realized, but the situation could have been much worse had we, and others, not taken action to inform people about the ocean and the need to protect it.
During our campaign to share the wonders of the sea and alert the public about the need to protect it, we have used every medium available——personal appearances, the printed word, and television. Now there is a new medium that is even more effective than its predecessors. Th
A. participate in a celebration
B. teach children there how to use the computer
C. make an adventure in the sea
D. spend the holiday on the seashore
“集中拌合法施工、纵缝”案例分析与答案解析题
背景材料：
某高速公路全长88km，双向6车道，路幅宽33．5m，设计车速100km／h，路面基层为水泥稳定碎石基层，根据工程实际情况及施工单位条件，施工单位采用了在中心站用厂拌设备进行集中拌合法施工，并采用专用稳定土集中厂拌机械拌制混合料。其施工工艺有：①施工放样。②准备下承层。③混合料拌合与运输。④布置基准线钢丝。⑤混合料摊铺与碾压。⑥自检验收。⑦质检。⑧养生。施工工艺流程按①→②→③→④→⑤→⑥→⑦→⑧的顺序进行。由于路面较宽，在摊铺时，分两幅摊铺，中间设一条纵缝，纵缝采用450斜接。碾压时，先用轻型两轮压路机跟在摊铺机后及时进行碾压，后用重型振动压路机继续碾压密实。
问题：
(1)施工单位的施工工艺流程是否正确？如果不正确，将其改正。
(2)施工过程中存在什么问题？结合该项目的实际情况考虑，最好的摊铺方法是什么？
背景资料：
某企业承建的高速公路工程项目，路线长20km，水泥稳定土基层为双层结构，总厚38cm，面积为505000m2，项目部将拌合站设于路线第5km，距离主线400m处，根据施工计划必须每日完成单幅约600m.为此，项目部投入了一台450t/h水泥稳定土拌合站，同时投入了载重15t的自卸翻斗车，为了文明施工，载重车速度重载时30km/h，空载时40km/h.（储备系数a＝1.15）
问题：
如果按每车料摊铺时间5min，2车待铺考虑，计算项目部应投入翻斗车的数量.
男性，25岁。上呼吸道感染后即出现肉眼血尿，体检：血压正常，肾功能正常。
IgA肾病已被证实，下列治疗措施中哪项对患者最有益（ ）最新试题
