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1、ideological and theoretical qualities and practical working ability, and strive to build a contingent of league cadres with positive work style and high quality. Hold a regular meeting of the party secretary every fortnightly, arrange the work of the regiment, feedback the student information. Focus
2、 on training junior high school, junior high school secretary of the regiment branch to enable them to raise A firm political conviction, diligent and diligent learning spirit and practical and innovative work style.重庆市巫溪县2016-2017学年高二物理下学期期中试题(无答案)13、某药物中间体的合成路线如下。下列说法正确的是( ) A对苯二酚在空气中能稳定存在B1mol该中间
3、体最多可与11molH2反应C2,5-二羟基苯乙酮能发生加成、取代、缩聚反应D该中间体分子最多可以消耗4molNaOH14、一电器中的变压器可视为理想变压器,它将220V交变电流改为110V,已知变压器原线圈匝数为1000,则副线圈匝数为( )A200 B400 C500 D320015、某小型发电机产生的交变电动势为e50sin100t(V),对此电动势,下列表述正确的有( )A最大值是50 V B有效值是25 VC频率是100 Hz D周期是0.01 s16、一小型电热器若接到输出电压为8V的直流电源上,消耗电功率为P;若把它接在某个正弦交流电源上,其消耗的电功率为.如果电热器电阻不变,则
4、此交流电源输出电压的最大值为 ( )A5 V B8 V C10 V D10 V17、如图所示为远距离交流输电的简化电路图发电厂的输出电压是U,用等效总电阻是r的两条输电线输电,输电线路中的电流是I1,其末端间的电压为U1.在输电线与用户间连有一理想变压器,流入用户端的电流为I2.则()A输电线路上损失的电功率为I1U B输电线上的电压降为UC理想变压器的输入功率为I rD用户端的电压为18、下列关于布朗运动的叙述,正确的是( )A悬浮小颗粒的运动就是固体分子的运动B被冻结在冰块中的小碳粒不能做布朗运动,是因为冰中的水分子不运动C做布朗运动的固体颗粒越小,布朗运动越明显D液体的温度越低,悬浮小颗
5、粒的运动越缓慢,当液体的温度到O时,固体小颗粒的运动就会停止19、如图所示,U形气缸固定在水平地面上,用重力不计的活塞封闭着一定质量的气体,已知气缸不漏气,活塞移动过程无摩擦。初始时,外界大气压强为p0,活塞紧压小挡板。现缓慢升高缸内气体的温度,则能反映气缸内气体的压强p随热力学温度T变化的图象是( )20、(多选)如图为两分子系统的势能Ep与两分子间距离r的关系曲线。下列说法正确的是( )A当r大于r1时,分子间的作用力表现为引力B当r小于r1时,分子间的作用力表现为斥力C在r由r1变到r2的过程中,分子间的作用力做负功D当r等于r2时,分子间的作用力为零21、(多选)图为某实验器材的结构示
6、意图,金属导热内筒和隔热外筒间封闭了一定体积的空气,内筒中有水,在水加热升温的过程中,被封闭的空气( )A内能增大 B分子间引力和斥力都减小C压强增大 D所有分子运动速率都增大第卷非选择题(共174分)计算题请写出解答步骤和必要的文字说明。22、(20分)下列各图装置均处于静止状态,计算图中各种情况下,被封闭气体的压强。(标准大气压强P0=76cmHg,图中液体为水银)23、(12分)如图所示线圈面积为S=0.05m2,共N=100匝,线圈总电阻为r=1,外电阻R=9,线圈处于B=T的匀强磁场中当线圈绕OO以角速度=20rad/s匀速转动时,求:(1)若从线圈处于中性面开始计时,写出电动势的瞬
7、时表达式;(2)两电表的示数; 24、(12分)如图所示,密闭容器有进气口和出气口可以和外部连通,容器的容积为V0,将进气口和出气口关闭,此时内部封闭的气体的压强为p0,将气体缓慢加热,使气体的温度由T0300 K升至T1400 K.(1)求此时气体的压强(2)保持T1400 K不变,缓慢由出气口抽出部分气体,使气体的压强再回到p0.求容器内剩余气体的质量与原来质量的比值 25、(18分)如图所示,在倾角为 的斜面上固定间距为 的两平行光滑金属导轨,上端连接一阻值为 的电阻,间距为 的三虚线段均水平且与金属导轨垂直,间有垂直斜面向上的匀强磁场。一长为 d ,质量为电阻为 的均匀导体棒从导轨上
8、从静止开始释放,进入磁场时恰好匀速下滑。已知重力加速度 ,金属导轨电阻不计,求:(1)导体棒穿越磁场过程中,电阻R增加的内能;(2)匀强磁场磁感应强度大小BStrengthen the team connection, strengthen the knowledge education among the students (especially the first grade students), and promote the formation of good school spirit with the influence of the league members. All Lea
9、gue branches should start with recommending outstanding students as the development objects of the League, take amateur league schools as the basis, conscientiously do a good job in the work of pre-league education, league membership education, League members vanguard exemplary consciousness educati
10、on, excellent league members education, etc. Under the premise of ensuring the quality, the development quantity of league members will increase steadily, and the ranks of league members in middle schools will be strengthened constantly. It is planned to develop a group of new league members in Apri
11、l and mid-October.2. Carry out the regular meeting system of the League branch, and strengthen the ideological accomplishment and the training work in the field of business. League cadres are the backbone of the work of the League, and their quality directly affects the quality of the work. Therefore, they plan to use their extracurricular activities on Wednesday to open special training and other forms of study activities. To help the regiment cadres improve their ideological quality and professional skills, improve their- 3 -
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