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【单选题】
实验测得下列四种溶液的pH如图所示其中溶液呈碱性的是（ ）A.
稀硫酸
B.
碳酸
C.
碳酸钠溶液
D.
氯化钠溶液
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举一反三
【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】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
【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】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 a greater range
C.
change the winch
D.
change the anchor heading
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