第16题: [单项选择]混凝土水灰比为0.62,已知设计配合比为水泥:砂:石子=280kg:650kg:1400kg,现测得工地砂含水率为3.2%,石子含水率为1.3%,其施工配合比是() A. 水泥:砂:石子:水=280:675.8:1410.3:133.7 B. 水泥:砂:石子:水=280:670.8:1418.2:133.7 C. 水泥:砂:石子:水=282:665.8:1410.3:133.7 D. 水泥:砂:石子:水=282:675.8:1410.3:133.7 参考答案:B
第26题: [单项选择]后滚翻时身体依次着垫的部位是() A. 臀部;腰;后背 B. 臀部;腰;后背;头 C. 臀部;后背;头 D. 腰;后背;头 参考答案:B
第27题: [单项选择]Anv loss or damage noticed when the goods are delivered must be reported to the( )at the time,otherwise he will not be liable for it. A. carrier B. consignee C. shipper D. consignor 参考答案:D