一定温度下在容积恒定的密闭容器中,进行如下可逆反应:A(s)+2B(g)C(g)

题型:选择题

问题:

一定温度下在容积恒定的密闭容器中,进行如下可逆反应:A(s)+2B(g)C(g)+D(g),当下列物理量不发生变化时,能表明该反应已达到平衡状态的是(  )                                               

①混合气体的密度   ②容器内气体的压强   ③混合气体的总物质的量 ④C物质的量浓度   ⑤混合气体的平均相对分子质量   ⑥ B的转化率

A.①④⑤⑥

B.只有④

C.②③④

D.全部

考点:化学平衡的有关计算影响化学平衡的因素达到化学平衡的标志化学平衡常数
题型:选择题
I had said goodbye to my husband, Joe, so often, but this time was ____.
We now had our first child. After nights of talks, we made the difficult ____ that Joe would go by himself to Alabama for the six-month training course, and I would stay behind with our new son. It was important that I ____ my teaching position near our home at Fort Hood. Also we were part of a strong network of friends ____ I could turn to for help.
On Joe's ____ evening at home, I bathed little Joey, got him into his sleeper and was heading to the bedroom when Joe gently touched ____ on the shoulder. Lifting the baby from my arms, he said he wanted to put Joey to bed tonight.
They headed down the hall, and I busied myself with meaningless tasks, ____ Joe to turn up from the bedroom within a few minutes. A half hour went by, and ____ he had not come back. Thinking he was having ____ getting our son to fall asleep, I walked quietly to the baby's room and ____ into the dimly-lit(灯光暗淡的)room.
Sitting in the rocking chair, moving slowly back and forth, was my husband with ____ in his eyes. He was holding our baby in his arms ____ he had fallen asleep long before. When his pained eyes met mine, he said, "I just can't put him down."
That night we stood over Joey's bed, holding each other and saying over and over that we would make it through this leaving and be ____ again soon.
Joey is six now, and he has a four-year-old brother named Jack. There have been many goodbyes ____ that night, yet my soldier still fights back tears when it's time to ____ once again in service to his country and give his boys that last, long hug goodbye.
小题1:
A.dangerous B.different C.impossible D.terrible
小题2:
A.promise B.wish C.suggestion D.decision
小题3:
A.miss B.keep C.get D.accept
小题4:
A.whom B.whose C.which D.what
小题5:
A.first B.next C.other D.last
小题6:
A.us B.them C.me D.her
小题7:
A.expecting B.rememberingC.agreeing D.allowing
小题8:
A.again B.still C.then D.ever
小题9:
A.excuse B.fun C.trouble D.chance
小题10:
A.moved B.talked C.turned D.looked
小题11:
A.colors B.tears C.joys D.fears
小题12:
A.even though B.as if C.so that D.now that
小题13:
A.sure B.proud C.aloneD.together
小题14:
A.on B.for C.since D.through
小题15:
A.visit B.sleep C.leave D.play
题型:选择题

下列关于编辑框的说法中,正确的是( )。

A.页标头和页注脚带区

B.页标头、细节和页注脚带区

C.标题、细节和总结带区

D.标题、页标头、细节、页注脚和总结带区

题型:选择题

膀胱刺激症的主要症状有().

A.尿频

B.尿急

C.尿痛

D.蛋白尿

E.水肿

题型:选择题

(3~5题共用题干)
患者,男,36岁,突发畏寒、发热及右上腹胀痛。查体:体温39.5℃,无黄疸,右上腹压痛伴肌紧张,肝肋下4cm,肝区叩痛阳性。皿WBC 16×109/L。胸腹透视:右膈抬高,活动受限。腹部B超:肝右后叶直径8cm的液性暗区。

对确诊最有价值的检查是

A.血培养

B.肝动脉造影

C.肝核素扫描

D.腹部CT

E.肝穿刺

题型:选择题

质量的广义概念除了产品质量还包括()。

A、产品数量

B、产品规格

C、工作质量

D、工作强度

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