下列所示的实验装置中,能达到实验目的的是
答案:C
正确是C;
A、应长进短出;B、铁应接电源的负极;D、应用蒸馏烧瓶,且温度计的水银球应置于蒸馏烧瓶的支管口处。
— The boss said we had only three days to finish the work.
— Don't worry.We have already________two thirds of it. [ ]
A. got down
B. got through
C. given in
D. given away
下列不是仆步转体适用范围的是()
A.臀痛
B.腰痛
C.肩痛
D.腿痛