- did you go on your holiday?
-I went to Tianjin. [ ]
A. What
B. How
C. Where
答案:C
梯形的中位线长为20cm,高为4cm,则其面积为( )
A.40cm2
B.60cm2
C.80cm2
D.100cm2
血糖测定时,取血后若不能立即检查且不能立即分离血浆或血清,为什么必须将血液加入含氟化钠的抗凝瓶()
A.抑制有氧氧化
B.抑制糖酵解
C.防止还原性物质的干扰
D.避免测定值偏高
E.抑制糖异生