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【简答题】
半固体培养基的用途有哪些?
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举一反三
【单选题】称取葡萄糖10.00g，加水溶解并稀释至100.0ml，于20℃用2dm测定管，测得溶液的旋光度为+10.6°，此葡萄糖的比旋度为
A.
53.0°
B.
-53.0°
C.
0.53°
D.
+106°
E.
+53.0°
【单选题】Some Heads of Government now fear that negotiations will ______ before a settlement is reached.
A.
wear out
B.
come along
C.
break off
D.
end up
【单选题】The Changbaishan Mountains have a huge variety of scenery, some of the best of _____ can only be reached on foot. [ ]
A.
that
B.
which
C.
what
D.
where
【单选题】Carol _____ some reading and _______ English yesterday.
A.
did, practiced
B.
did, practicing
C.
do, practiced
D.
does, practices
【多选题】The type of anesthesia used during your surgery typically depends upon
A.
the type of surgery
B.
your state of health
C.
the length of the surgery
D.
the preferences of your anesthesia provider
E.
surgeon
【单选题】称取葡萄糖10.00g，加水溶解并稀释至100.0ml，于20℃用2测定管，测得溶液的旋光度为+10.6°，此葡萄糖的比旋度为（）
A.
53.0°
B.
-53.0°
C.
0.53°
D.
+106°
E.
+53.0°
【单选题】— Are these your books? — _____ . They are Sally's. [ ]
A.
Yes, these are
B.
Yes, they are.
C.
No, these aren't
D.
No, they aren't.
【单选题】- What am I going to do about a present for Carol? - You______some flowers.
A.
might have sent her
B.
must have sent her
C.
could send her
D.
would send her
【单选题】—Is ______ your dictionary? —Yes, thank you. And ______ are my books. [ ]
A.
this; this
B.
this; these
C.
these; this
D.
these; these
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