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【单选题】
It is good that we have large national parks, _____ wildlife enjoys proper protection. [ ]A.
whose
B.
which
C.
where
D.
what
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反馈参考答案：
举一反三
【单选题】有机氯农药残留量的检测方法一般是
A.
薄层-酶抑制法
B.
气相色谱法(一般用装有电子捕获器的气相色谱仪)
C.
薄层色谱法
D.
高效液相色谱法
E.
蛋白电泳色谱法
【简答题】直流电动机的建模和参数设置 直流电动机的参数设置步骤:
【单选题】How does he do the training?
A.
A system of three days' training.
B.
A system of two days' training.
C.
A system of three days' training with one day off.
【简答题】uniport carrier
【单选题】How does uniport transport compare to diffusion?
A.
Similar to diffusion, uniport transport is nonspecific
B.
Uniport transport is slower but more specific than diffusion
C.
Uniport transport is much faster and more specific than diffusion.
D.
diffusion is reversible but uniport transport is not.
【简答题】晶体管放大器的印制电路板，应尽量采用（）地线。
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