煤矿井下变压器应采用干式变压器。
参考答案:对
某6周患儿,出生后随生长发现患儿头颅前后径较大,横径小。X线检查及体检矢状缝闭合。
首选治疗()
A.药物治疗
B.手术治疗
C.无需治疗
D.基因治疗
E.放射治疗
He was ________and died of lung cancer at an early age.
A.addicted to smoke
B.addictive to smoke
C.addicted to smoking
D.addictive to smoking