【判断题】单位时间内流经管道任一有效截面的流体量为称为流量。
【单选题】The reason why the mice in Ader' s experiment avoided saccharin was that ______ .
A.
they disliked its taste
B.
it affected their immune systems
C.
it led to stomach pains
D.
they associated it with stomach
【判断题】若所有稀释度平均均无菌落生长,则菌落总数记为0.
【单选题】The reason why George is looking for another job is that he’s _____ his manager’s complaints.
【判断题】若所有稀释度平板均无菌落生长,则报告为0 CFU/g (mL)。
【单选题】单位时间内流经管道任一截面流体的(),称为体积流量。
【单选题】在食品中 霉菌和酵母菌检验的平板计数环节, 若所有稀释度平板均无菌落生长,则以小于1 乘以 ( ) 稀释倍数计算 。
【单选题】As for Latin America generally, there’s no reason why, ______resources available, it can’t become a highly industrialized area.
【判断题】单位时间内流经管道的任一截面积的流体量称为流量,其单位可以是m/s。()