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【单选题】
碱液处理后的应立即投入流动水中彻底漂洗,洗净表面的余碱,必要时可用()的盐酸中和,以防变色?。A.
0.01%~0.03%
B.
0.1%~0.3%
C.
0.3%~0.6%
D.
0.6%~0.9%
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举一反三
【单选题】The chief cause of loss for the nursery crops before marketed may be _____________ .
A.
desciccation during storage
B.
warming during storage
C.
lacks of cold-storage facilities at retail outlets
D.
all of the above
【单选题】What's the public opnion about the nursery staff?
A.
They should focus on managing the parents.
B.
They should focus on caring for the children.
C.
They should send more reports to the nursery.
D.
They should send more pictures to the parents.
【简答题】What is a nursery in this passage?
【单选题】The ____ of new scientific discoveries to industrial production methods usually makes jobs easier to do.
A.
addition
B.
association
C.
application
D.
affection
【单选题】The ___ of new scientific discoveries to industrial production methods usually makes jobs easier to do.
A.
application
B.
addition
C.
affection
D.
association
【简答题】A．They had lost their jobs as a result of the Industrial Revolution. B．They had been suffering from political and religious oppression. C．They wanted to flee from the widespread famine in Northern Eur...
【单选题】Industrial ships are those whose function is to _________at sea.
A.
carry dry cargoes
B.
carry fluid cargoes
C.
carry passengers
D.
carry out an industrial process
【单选题】What is the environmental benefit of GM crops?
A.
Herbicidetolerant crops can reduce the use of chemicals.
B.
Herbicidetolerant crops can use milder chemicals.
C.
Bt genes can protect crops against insects instead of chemical pesticides.
D.
Insect-resistant crops only need a more benign mix of chemicals .
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