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15、v_1276394906585 OLMARGIN-BOTTOM: 0cmDIV.MyFav_1276394906585 ULMARGIN-BOTTOM: 0cm一、选择题123456789101112BCDBBCDACCDD二、填空题13（1）移动通讯（2）微波炉加热物品（3）验钞机（4）X光片 （其他合理的都正确）14固体 形变15平面镜 小孔 吸收（或挡住）16（1）不变 （2）升华 （3）D17压强 02 156105 压强 静止 218快 小 小19600 00620变大 750N211500 80% 15022做功 增加 压缩冲程2310；15；06；27三、作图与实验题24（略）2
16、5（1）物体在前反射面中所成的像和物体到前反射面的距离相等。（像和物体到平面镜的距离相等）（2）同一支蜡烛在同一厚度玻璃中所成的两个像间的距离相等；同一支蜡烛在不同厚度玻璃中所成的两个像间的距离不等，且玻璃越厚，像间的距离越大。或：同一支蜡烛所成的两个像间的距离大于玻璃板的厚度，小于玻璃板厚度的两倍。26（1）当物体受力平衡时，运动状态不发生改变。（2）当物体受力不平衡时，运动状态发生改变。27（1）第二列与第四列。（2）改变动力的方向，越大，动力越小。（3）支点到动力作用线的距离；该距离越大，动力越小。（4）动力的大小、支点到动力作用线的距离。（2分）28（1）如图所示：（2）左（3）22 11（4）电压表接线柱松动（或接触不良）（5）044四、综合解答题29（1）变小、变小（2）06105Pa 01105Pa（3）0225A 225V30（1）电能转化为化学能（2）化学能转化为电能,电能再转化为机械能（3）由二力平衡得F=f=40N1s内做得功W总=Pt=400W1s=400J动力所做得有用功W有用=Fs=40N7m/s1s=280J（4）消除了尾气排放；减少了热量排放；能源利用效率高；减少了噪音排放等。