您所在的当前位置：高中物理试题 >

原子核的衰变、半衰期

> 下列核反应方程中的X代表中子的是（　　） A． 143 N+ 42 He→ 178 O+X B． 3015 P→ 3014 Si+x C． 94 Be+ 42 He→ 10 n+X D． 23592 U+X→ 13654 Xe+ 9038 Sr+10 10 n

问题：

发布时间：2024-09-13

下列核反应方程中的X代表中子的是（　　）

A．

143

N+

42

He→

178

O+X

B．

3015

P→

3014

Si+x

C．

94

Be+

42

He→

10

n+X

D．

23592

U+X→

13654

Xe+

9038

Sr+10

10

n

参考答案：

提问用户：NO***K8b

可能感兴趣的题目：

1 下列离子方程式正确的是（　　） A．硫酸铝溶液中加入过量氨水：Al3++4OH-=AlO-2+2H2O B．氯气通入水中：Cl2+H2O=2H++Cl-+ClO- C．钠投入水中：Na+2H2O=Na++2OH-+H2↑ D．向硅酸钠溶液中通入过量的CO2：SiO32-+2CO2+2H2O=H2SiO3↓+2HCO-3
2 中美建交30年来，两国关系虽历经风雨，存在着分歧和利益冲突，但总体上保持了积极、稳步的发展态势。中美关系的发展历程表明 [ ] A、加强区域合作是当今世界的主题 B、维护国家主权是我国外交政策的宗旨 C、化解国家间的矛盾有利于国际关系健康发展 D、协调国家间的利益关系有利于消除国际竞争
3 There is no doubt______ one day the medicine for AIDS will be made. A．that B．whether C．if D．so
4 甘地提出“非暴力不合作”的根本目的是 [ ] A．壮大国大党势力 B．取得印度独立 C．反对英国殖民统治 D．提高民族自尊心
5 Tsunami warning system is tested If he, the founder of the Hawaiian Volcano Observatory, were alive, Thomas Jaggar would be proud of the U.S. tsunami warning system after Friday’s devastating earthquake in Japan sent a surge (大浪，汹涌) of ocean water dashing toward the West Coast. ● WASHINGTON — So many people surged to the West Coast and Alaska Tsunami Warning Center website that it slowed to a crawl early Friday, unable to provide critical information to the public about the coastal impact in the U.S. of a massive earthquake in Japan. McClatchy Washington Bureau — Mar 11 06:09 p.m. ● CHICAGO — A tsunami warning has been issued for the central and northern California coast and Oregon, the National Weather Service announced early Friday. Chicago Tribune— Mar 11 06:07 a.m. ● HONOLULU — A tsunami warning was issued late on Thursday for Hawaii after an 8.9 magnitude earthquake struck in the Pacific near Japan, prompting state civil defense officials to order all coastal areas evacuated（把…撤出…）by 2 a.m. local time. Tsunami sirens (警报) began sounding at 9:59 p.m. on Thursday. They have sounded every hour since 11:15 p.m. Alaska Tsunami Warning Center also issued a warning for much of the coasts of Alaska, Washington, Oregon and California. Reuters via Yahoo! News — Mar 11 01:22 a.m. ● LOMPOC — Tsunami warning ‘a wake-up call’ A tsunami warning that led to evacuations for coastal communities and campgrounds in Santa Barbara and San Luis Obispo counties Friday served as a successful trial for a more serious emergency, officials said after the danger passed. The Lompoc Record — Mar 11 11:29 p.m. ● WELLINGTON — The Pacific Tsunami Warning Centre issued a warning after an 8.9 magnitude earthquake struck in the Pacific near Japan, and it said the sea level readings confirm that a tsunami has been generated and was in effect for some Pacific islands — Hawaii, China’s Taiwan, the Philippines and Indonesia etc. New Straits Times — Mar 11 07:48 a.m. — Reproduced by Yahoo Greenwich Meantime 小题1:. . A tsunami warning was issued for all the following states in the U.S. except for _____. A．Ohio B．California C．Oregon D．Alaska 小题2:. The underlined word “prompting” (in the fourth paragraph) most probably means _____. A．promoting B．advocating C．urging D．appealing 小题3:. According to the passage, the Pacific Tsunami warning was first reported by _____. A．New Straits Times B．Reuters via Yahoo! News C．McClatchy Washington Bureau D．Chicago Tribune 小题4:. In which city did the news agency issue a tsunami affecting for some other places apart from Japan and Hawaii? A. LOMPOC. B. WASHINGTON. C. HONOLULU. D. WELLINGTON.
6 I hope, first of all, that we shall never lose _____ heart in face of _____ failure. A．the; a B．the; the C．不填; 不填 D．a; 不填
7 下列河流与其所汇入的海洋组合正确的是 A.湄公河-太平洋 B.恒河-大西洋 C.黄河-印度洋 D.鄂毕河-北冰洋
8 下列关于功的说法正确的是 A．力对物体做功多，说明物体的位移一定大 B．不论静摩擦力还是滑动摩擦力，总是做负功 C．一对平衡力所做功的代数和一定为零 D．作用力做正功时，反作用力一定做负功
9 下列除杂质的操作中不正确的是 [ ] A．铁粉中混有铝粉：加入过量烧碱溶液充分反应后过滤 B．FeCl 2溶液中混有FeCl 3：加入过量铁粉充分反应后过滤 C．Na 2CO 3固体中混有少量NaHCO 3：加入适量NaOH溶液 D．Al(OH) 3中混有Mg(OH) 2：加入足量烧碱溶液后过滤，向滤液中通入过量CO 2后过滤
10 Many teachers ________ cars nowadays．They drive to work every day． A.has B.have C.will have D.had

下列核反应方程中的X代表中子的是（ ） A． 143 N+ 42 He→ 178 O+X B． 3015 P→ 3014 Si+x C． 94 Be+ 42 He→ 10 n+X D． 23592 U+X→ 13654 Xe+ 9038 Sr+10 10 n

可能感兴趣的题目：

下列核反应方程中的X代表中子的是（　　）

A．

143

N+

42

He→

178

O+X

B．

3015

P→

3014

Si+x

C．

94

Be+

42

He→

10

n+X

D．

23592

U+X→

13654

Xe+

9038

Sr+10

10

n