【单选题】— Can you go by ship _____________ by train? — I can go by train. [ ]
【简答题】You can buy train tickets at the ____________(售票处) .
【单选题】24岁未婚妇女,减肥后月经稀发之闭经6个月,为了解卵巢功能,下述哪项检查最简便、易行、可靠______
【单选题】You can buy ticket on the train or platform ticket office near the ______________, but you may not have any berth.
【单选题】对可逆反应4NH 3 (g)+5O 2 (g) 4NO(g)+6H 2 O(g),下列叙述正确的是 [ ]
A.
反应达到平衡时,若两种反应物的转化率相等,则起始投入的n(NH 3 )∶n(O 2 )=4∶5
B.
反应达到平衡后,对体系一直进行加压,平衡总是向逆向移动
C.
反应达到平衡时,若向压强固定的密闭容器中充入稀有气体,平衡不移动
D.
当v 正 (NH 3 )∶v 正 (NO)=1∶1时,说明该化学反应已经达到平衡
【单选题】Ifyou can’t buy a direct train ticket, you can buy a ______ ticket.
【单选题】在密闭容器中发生可逆反应4NH 3 +5O 2 4NO+6H 2 O(g),以下是不同情况下的反应速率 ,其中最快的是 ( )
A.
v(O 2 )='0.01' mol·L -1 ·s -1
B.
v(NH 3 )='0.02' mol·L -1 ·s -1
C.
v(H 2 O)='0.04' mol·L -1 ·s -1
D.
v(NO)='0.03' mol·L -1 ·s -1
【简答题】You can not buy train tickets at ______________.
【单选题】反应4NH 3 +5O 2 4NO+6H 2 O(g),在5L的密闭容器中进行半分钟后,NO的物质的量增加了0.3mol,则此反应的平均速率υ(x)(表示反应物的消耗速率或生成物的生成速率)为 ( )
A.
υ(O 2 )='0.001' mol·L -1 ·s -1
B.
υ(NO)='0.06' mol·L -1 ·s -1
C.
υ(H 2 O) ='0.003' mol·L -1 ·s -1
D.
υ(NH 3 )='0.001' mol·L -1 ·s -1
【单选题】You can not buy train tickets at ______________.
B.
ticket machine of railway station
C.
ticket agency in hotels