干熄炉的耐火材料有()组成
参考答案:粘土砖、隔热砖、陶瓷纤维毡、隔热浇注料和玄武岩衬板
显示CT值的下限是() |显示CT值的中心值是() |某一脑部图像的窗宽和窗位分别是80HU和40HU,那么它所显示的CT值范围为()
A.OHU
B.80HU
C.40HU
D.60HU
E.120HU
The possibility _________ we won’t produce enough goods troubles everyone here.
A.which
B.that
C.who
D.where