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【单选题】
400K气相反应的速率常数kp=【图片】,如速率常数用kc表示,则kc (单位: 【图片】)为( )A.
3.326
B.
C.
D.
3326
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【单选题】— Can you go by ship _____________ by train? — I can go by train. [ ]
A.
and
B.
by
C.
or
【单选题】It's very convenient ______ us to buy train tickets now because we can buy them either from the station or on the internet. [ ]
A.
to
B.
of
C.
by
D.
for
【简答题】You can buy train tickets at the ____________(售票处) .
【单选题】When dragging of an anchor occurs, you must back it up with a piggyback (backing) anchor or ( ).
A.
reduce the riser tension
B.
reposition it at a greater range
C.
change the winch
D.
change the anchor heading
【单选题】You can buy ticket on the train or platform ticket office near the ______________, but you may not have any berth.
A.
entrance
B.
exit
C.
station
D.
train
【单选题】When dragging of an anchor occurs, you must be back it up with a piggyback (backing) anchor or _____.
A.
reduce the riser tension
B.
reposition it at afreater range
C.
change the winch
D.
change the anchor heading
【简答题】You can not buy train tickets at ______________.
【单选题】When dragging of an anchor occurs, you must back it up with a piggyback (backing) anchor or .
A.
reduce the rise tension
B.
reposition it at a greater range
C.
change the winch
D.
change the anchor heading
【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 ______________.
A.
the ticket office
B.
ticket machine of railway station
C.
ticket agency in hotels
D.
left luggage
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