易行车、难行车
参考答案:
根据车辆的走行性能和装载货物的轻重,在溜放中相对单位运行阻力较小走行较快的车辆称为易行车,反之为难行车。
小明想测量牛奶的密度:他利用天平(含砝码)、刻度尺、小烧杯(无刻度)、适量的水、足量的牛奶、橡皮筋等器材设计了一个测量牛奶密度的实验方案,以下是他设计的实验步骤,请你补充完整,并帮助小明设计一个实验数据记录表格. 用调节好的天平称出小烧杯的质量m1并记录在实验表格中;
在烧杯中注入适量的水,并用刻度尺量出水面的高度为h1,用天平称出烧杯和水的总质量m2并记录在实验表格中;
(1)________________________________________
(2)已知水的密度为ρ水,利用上述测量出的物理量和已知量计算牛奶密度的表达式为:__________。
(3)实验表格:
An Intranet is (66) the application of Internet technology within an internal or closed user group. Intranets are company (67) and do not have a (68) connection to the Internet. Used properly an Intranet is highly effective corporate tool, capable of regularly (69) information to empower the workforce with the information needed to perform their roles. Used in this way, an Intranet represents a step towards the (70) office.
(66)是()
A.simple
B.simply
C.single
D.singly