【单选题】Constant forces F 1 and F 2 acting on a box as the box slides rightwards across a frictionless floor. F 1 = 2.0N is horizontal and leftward, and F 2 = 4.0N with angled upward of 60 o to the floor. The...
【判断题】本案例中,在被告向原告签署了三份电放提单,提单上记载货物运输方式为CFS/CFS,另,提单中还载明了拼箱服务费。由此,被告只能以无船承运人的身份对装拆箱时的过错承担责任。
【单选题】Constant forces F 1 and F 2 acting on a box as the box slides rightwards across a frictionless floor. F 1 = 2.0N is horizontal and leftward, and F 2 = 4.0N with angled upward of 60 o from the floor. T...
【判断题】擦洗附件及整机外观,检查各传动部分、润滑系统、冷却系统确认无误后,先手动后机动试车,使机床正常运转。
【单选题】为了防止麻醉废气污染对手术室工作人员的健康造成不良影响,下列关于麻醉废气污染防护措施的叙述不正确的是
【单选题】下列关于企业效率工资的说法中,正确的是( )。
D.
同行其他企业支付的工资提高时,企业的效率工资也提高
【单选题】PLC的输入/输出有响应滞后现象,一般来说,输入信号的宽度要( )一个扫描周期,否则很可能造成信号的丢失。
【判断题】The power of F M and PM signals both are only related to the power of carrier wave.