根据《石油化工企业设计防火规范》对危险化学品的火灾危险性分类,氢气属于哪一种()。
A.甲类可燃气体
B.乙类可燃气体
C.甲A类液态烃
D.甲B类可燃液体
参考答案:A
His suggestion ______ to see the art exhibition _____ every one of us.[ ]
A. we go; is interested in
B. that we should go; interest
C. that we go; interested
D. which we should go; interested
Honler综合征是指()。
A.甲状腺癌压迫喉返神经产生声嘶
B.甲状腺癌压迫气管产生呼吸困难
C.甲状腺癌压迫颈交感神经节产生系列症状
D.甲状腺癌压迫食管产生吞咽困难
E.甲状腺癌侵袭颈丛浅支产生系列症状