当输送凝固点等于或者高于150℃的物料时，应采用（）
A、高压蒸汽伴热
B、导热油伴热
C、蒸汽夹套管加热
D、电热带
参考答案：C
He lay in bed, with his eyes ______ up at the ceiling and his fingers ______.
A．looked; crossing
B．looking; crossing
C．looking; crossed
D．looked; crossed
鉴别中毒性菌痢与乙型脑炎的重要依据是（）
A.高热、昏迷、惊厥
B.季节性
C.肠道症状
D.脑脊液常规
E.不属于以上任何情况
