在沥青拌和厂取样时,应将专用容器装在拌和机卸料斗下方,每放一次料取一次样,连续取几次,混合即可。( )
参考答案:错
解析:(正确:混合后,还应按四分法取样至足够数量)
The employment rate has continued to rise in big cities thanks to the efforts of the local govenments to increase .
A.then
B.those
C.it
D.that
BSCCO高温超导材料的发现人是谁?()
A.马叶达
B.韩征和
C.叶高翔
D.麦克斯韦