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【单选题】
对库存物资实行ABC分类管理方法，下列()物资属于A类物资A.
品种数约占库存物资品种总数50%～70%，占库存物资总金额的5%～15%
B.
品种数约占库存物资品种总数20%～30%，占库存物资总金额的15%～35%
C.
品种数约占库存物资品种总数10%～20%，占库存物资总金额的60%～80%
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举一反三
【单选题】6-4、根据吸附剂运动状态不同，吸附设备的类型分为固定床吸附器、（ ）、流化床吸附器、其他类型吸附器四类。
A.
流动床吸附器
B.
立式床吸附器
C.
卧式床吸附器
D.
移动床吸附器
【单选题】He does his homework as _____ as he can. [ ]
A.
careful
B.
carefully
C.
more carefully
D.
care
【简答题】吸附法提取发酵产物的优缺点、吸附剂具备条件、吸附剂的种类分别是什么？
【简答题】吸附法提取发酵产物的优缺点、吸附剂具备条件、吸附剂的种类。
【简答题】______, the experiment will be successful. A) If carefully doing B) If did carefully C) If carefully done D) If doing carefully
【单选题】She is _____. She writes most _____ in our class. [ ]
A.
careful, careful
B.
carefully, carefully
C.
carefully, careful
D.
careful, carefully
【单选题】Of all the students in our class. Betty writes _____. [ ]
A.
very carefully
B.
more carefully
C.
most carefully
D.
the most careful
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