A.原子序数减1,质量数不变
B.质量数减1,原子序数不变
C.原子序数加1,质量数不变
D.质量数加1,原子序数不变
您可能感兴趣的试卷
你可能感兴趣的试题
A.吡哆醛磷酸
B.亚铁螯合酶
C.促红细胞生成素
D.纤溶酶原
E.胆色素原
A.NADH
B.NADPH
C.ATP
D.谷胱甘肽
E.甘油酸-2,3-二磷酸
A.131I
B.32P
C.198Au
D.99mTc
A.压力因素
B.温度因素
C.化学状态因素
D.不受任何环境因素
A.b是大于零的任意实数
B.b=α+l
C.b=1/1+α
D.b=1/α-1
A.蛋白质
B.甘油三酯
C.游离脂肪酸
D.胆固醇
E.磷脂
A. 剌槐、沙棘等
B. 杉树、杨树等
C. 按树、竹类
D. 箭杆杨、泡桐等
A. 母树林
B. 采穗圃
C. 种子园
D. 苗圃
A.尿卟啉原Ⅲ脱羧酶
B.ALA脱水酶
C.ALA合酶
D.胆色素原脱氨酶
E.亚铁螯合酶
A.X,Y必相互独立
B.X,Y,必不相关
C.必有E(XY)=E(X)E(Y)
D.必有D(X+Y)=D(X)+D(Y)
最新试题
Which of the following can best serve as the title of the passage?()
He wants to change the world and make it better.()
图2的作者,该书法家是哪里人?()
Young people liked renting home furniture because().
From the last paragraph,can you tell whether the article is optimistic(乐观的)or pessimistic(悲观的)about the future of Indian women()
Who will favor the study results by researchers from the University of California?()
收到储运部门转来出库单(记账联),列明出库彩电500台,每台1500元,予以转账。正确的会计分录()。
What can you infer from the passage?()
根据原文提供的信息,下列推断正确的一项是()
The robot would stop in front of pets and people thanks to().