简答室外场地主要有几种?
参考答案:
三种。开敞的空间场所(或称为集散广场),活动场地,停车场所。
对放射治疗最为敏感的神经上皮肿瘤是()。
A.星形细胞瘤
B.室管膜细胞瘤
C.髓母细胞瘤
D.胶质母细胞瘤
E.少枝胶质细胞瘤
All entries in the official logbook must be signed by the master and().
A.the union representative
B.the person aboat whom the entry concerns
C.no one else
D.one other crew member