搜索 - 科创

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（d）：a.清晰度不高 b.存在屏斑现象 c.散射线较严重 d.以上都是　　246.荧光增感屏在射线停止激发后仍继续发光，造成底片质量严重下降，这种光称为（a）　　a.余辉（磷光） b.紫外光 c.红外光

生物学家发现其秘密在于它的眼睛和鼻子之间的颊窝，这个部位是一个生物的红外线感受器，能感受到远处动物活动时发出的微量红外线，从而进行热定位。

新的高精度的地热能勘探技术将逐渐取代目前采用的勘探石油的方法和设备，在技术上取得重大突破；2.随着勘探技术的进步，开发资金投入的增多，查明的可供利用的地热资源的总储量有可能大幅度的增长，甚至高达20倍左右；3.在相关高技术，如新材料、激光、红外

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