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【多选题】
机器的特征有:A.
特定机件的组合体
B.
各机件之间具有确定的相对运动
C.
实现能量的转换并做有用功
D.
替代人类的体力劳动
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反馈参考答案：
举一反三
【单选题】If a student can make what ___has been learned , whether in class or from social practice,he will make steady progress.
A.
his own
B.
him
C.
himself
D.
his
【简答题】葡萄糖中氯化物的检查:取本品 2.0 g ,加水 100 mL 加热溶解,冷却,过滤,取滤液 25 mL 依法检查氯化物,所发生的浑浊与标准氯化钠溶液 5.0 mL (每 1 mL 相当于 10 μg Cl - )制成的对照液比较,不得更浓。计算氯化物的限量。
【单选题】He has acquired a (comprehensive) knowledge of his subject through reading many new materials and up-to-date publications. 选择能代替括号里的选项
A.
extensive
B.
comparative
C.
subjective
D.
excessive
【简答题】葡萄糖中氯化物的检查:取本品2.0g,加水100ml加热溶解,冷却,过滤,取滤液25ml依法检查氯化物,所发生的浑浊与标准氯化钠溶液5.0ml(每1ml相当于10μg Cl—)制成的对照液比较, 不得更浓。计算氯化物的限量。
【简答题】Ma Yun has a habit now, that is, whatever he sees and reads, he will and .
【单选题】A man is a laborer if____.
A.
what he likes to do is not recognized by society
B.
he has to make a living or supporting his family
C.
he cannot get paid for what he does
D.
he is forced to do what he doesn't enjoy
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