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【简答题】
大豆种子的结构有 和 两部分,我们称为 种子;玉米种子的结构有 、 和 三部分,我们称为 种子。
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反馈参考答案：
举一反三
【单选题】If we had a sample in hand, we ___ to negotiate business with our end users now.
A.
should have
B.
would be able
C.
had been able
D.
should have been
【单选题】It ________ we had stayed together for a couple of weeks ________ I found we had a lot in common.
A.
was until; when
B.
was until; that
C.
was not until; when
D.
was not until; that
【单选题】If we had a sample in hand, we () to negotiate business with our end-users now.
A.
would be able
B.
should have
C.
had been able
D.
should have been able
【单选题】鉴定萜类化物结构中存在共轭双键,可选用的化学反应是( )。
A.
卤化氢加成反应
B.
溴加成反应
C.
顺丁烯二酸酐加成反应（Die1s-Alder反应）
D.
亚硝酰氯加成反应
【单选题】下列方法中,不属于Service生命周期的是()
A.
onResume()
B.
onStartCommand()
C.
onCreate()
D.
onDestroy()
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