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一、本题共15小题,在每小题给出的四个选项中,有一项是符合题意的.(共30分,每小题2分)1.在镭核_(88)~(226)Ra中,含有质子数与中子数分别是（）A.质子数88,中子数226B.质子数226,中子数88C.质子数88,中子数138D.质子数138,中子数2262.下列关于惯性的说法.正确的是（）A.只有静止或做匀速直线运动的物体才具有惯性B.做变速运动的物体没有惯性C.有的物体没有惯性D.两个物体质量相等,那么它们的惯性大小相等3.真空中有两个点电荷,它们间的静电力为F,如果保持它们所带的电量不变,将它们之间的距离增大为原来的3倍,它们之间静电力的大小等于（）
A. There are 15 questions in this question. Among the four options given in each question, one is consistent with the meaning of the question. (30 points in total, 2 points for each question) 1. In the nucleus _(88)~( 226) In Ra, the number of protons and neutrons are () A. The number of protons 88, the number of neutrons 226B. The number of protons 226, the number of neutrons 88C. The number of protons 88, the number of neutrons 138D. The number of protons 138, medium Sub-number 2262. The following statement about inertia. The correct one is () A. Only objects that are stationary or do a uniform linear motion have inertia B. Objects that do speed-changing motion have no inertia C. Some objects have no inertia D. Two objects The masses are equal, then their inertial magnitude is equal. 3. There are two point charges in the vacuum. The electrostatic force between them is F. If they keep the same amount of power, the distance between them is increased by 3 times. The electrostatic force between them is equal to ()