he+carried+his+age

冷翔辰4076太阳内部有多种热核反应,其中的一个反应方程是: H+ H→ He+x.若已知 H的质量为m 1 ; H 的质量为 -
支卫泪15569063052 ______ AC x是中子, H和 H只有在高温下才能够发生聚变反应,选项A正确B错误;由质能方程可知,这个反应释放的核能为ΔE = (m 1 + m 2 – m 3 – m 4 )c 2 ,选项C正确;我国大亚湾核电站就是利用重核裂变释放的能量来发电的,选项D错误.

冷翔辰4076在下列四个核反应中,X表示中子的是哪些( ) -
支卫泪15569063052 ______[选项] A. 714N+24He→817O+X B. 1327Al+24He→1530P+X C. 12H+13H→24He+X D. 23592U+X9038Sr+13454Xe+1010n

冷翔辰4076一个初中EW的英语填空Once there was a fat monk.He lived in a hill.Every day ,he came down the hill and carried water in - ____ - buckets for himself .A few ... -
支卫泪15569063052 ______[答案] once there was a fat monk.He lived in a hill.Every day ,he came down the hill and carried water in the buckets for himself .A few days ____later____,a second tall monk came and they lived together.They decided to carry water in __one_ bucket together....

冷翔辰4076对于下述四个核反应方程说法中正确的有( ) ① 94Be+ 42He→ 126C+ 10n ② 31H+ 11H→ 42He+能量 ③ 23592U+ 10n→ 9038Sr+ 13654Xe+x 10n ④ 199... -
支卫泪15569063052 ______[选项] A. ①是发现中子的核反应方程 B. ②是链式反应方程 C. ③是核裂变方程,其中x=10 D. ④是α衰变方程,其中Y是质子

冷翔辰4076下列核反应方程中,属于核聚变的是( ) -
支卫泪15569063052 ______[选项] A. 21H+ 31H→ 42He+ 10n B. 23490Th→ 23491Pa+ 0-1e C. 23892U→ 23490Th+ 42He D. 23592U+ 10n→ 14456Ba+ 8936Kr+3 10n

冷翔辰4076Because the weather was very hot ,he carried the bed on to the roof of his horse.介词为什麽用两个Because the weather was very hot ,he carried the bed on to ... -
支卫泪15569063052 ______[答案] 这很正常,介词有事可以连用.这里的on表示向上的意思,用up代替更好. carry the bed up to the roof. 相似的用法还有: Get the cleaner from behind the door.从门后把吸尘器拿出来、

冷翔辰4076热核反应方程: 21H+ 31H→ 42He+X+17.6MeV,其中X表示某种粒子,则下列表述正确的是( ) -
支卫泪15569063052 ______[选项] A. X是质子 B. 该反应需要吸收17.6MeV的能量才能发生 C. 平均每个核子能释放3MeV以上能量 D. (m 21H+m 31H)>(m 42He+mX)

冷翔辰4076在下列四个核反应中,X表示中子的是哪些( ) -
支卫泪15569063052 ______[选项] A. 714N+24He→817O+X B. 1327Al+24He→1530P+X C. 12H+13H→24He+X D. 23592U+X 9038Sr+ 13454Xe+10 10n

冷翔辰4076英语词组:rush PS:用单词的适当形式填空He rushed out and carried the little boy to______.(safe) -
支卫泪15569063052 ______[答案] 跑出去的意思. safety

冷翔辰4076把五个元音字母变成各种单词 例:A+N(AN)+D(AND)+H(HAND)1.A+T(AT)+H(HAT)+{ }( ) 2.E+H(HE)+{ }( )+{ }( ) { }里填字母 ( )里填单词 中间每一次的... -
支卫泪15569063052 ______[答案] A+T(AT)+H(HAT)+T(THAT) E+H(HE)+R(HER)+O(HERO)