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【单选题】
可作为不溶性骨架片的骨架材料的是A.
聚乙烯醇
B.
壳多糖
C.
果胶
D.
海藻酸钠
E.
聚氯乙烯
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反馈参考答案：
举一反三
【单选题】关于潜在就业量的说法错误的是( )。
A.
当就业量等于潜在就业量时，失业率等于自然失业率
B.
潜在就业量又可以说成是与自然失业率相对应的就业量
C.
与潜在就业量相对应的状态又被称为充分就业状态
D.
潜在就业量是一个内生变量，它随着人口的增长稳步增长
【多选题】定速巡航系统使用的优点有( )
A.
可以解放驾驶员右脚
B.
减少制动踏板的踩放次数，避免发动机转速波动，提高燃油经济性
C.
精确控制车速，避免超速
D.
减轻驾驶员操作劳动强度，提高驾驶舒适性的自动行驶装置
【单选题】I was pleasantly surprised at my ability to ________an essay that the professor chose to read to the class. It was without doubt one of the happiest moments in my school_________, career but I did my ...
A.
compose; career; avoid showing; hardly hold back
B.
compose; avoid showing; career; hardly hold back;
C.
avoid showing; compose; career; hardly hold back
D.
career; hardly hold back; compose; avoid showing
【简答题】---Do you like the film? ---Yes, it is really an exciting film. I can hardly __________ my feelings.
【简答题】Reading and words have always played ___1___ in my life. As a child, I watched my father read ___2___ and magazines from cover to cover. My mother, although not an avid book reader, always had a cross...
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