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【单选题】
对粒度较大的固体样品的试样加工程序一般为: 1、中碎;2、粗碎;3、细碎;4、过筛、混匀、缩分;5、分析试样A.
1——4——2——4——3——5
B.
2——4——1——4——3——4——5
C.
2——1——3——4——5
D.
2——3——1——4——5
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反馈参考答案：
举一反三
【简答题】根据磁化性能不同,常把磁性材料分为 、 、 。
【单选题】The carrier shall not be liable for the loss of or damage to the goods occurred during the period of carrier's responsibility arising or resulting from any of the following causes except ______．
A.
Fire，unless caused by the actual fault of the carrier
B.
Force majeure and perils，ers and accidents of the sea or other navigable waters
C.
War or armed conflict
D.
Intentional misconducts by the crew members on board the ship against the carrier
【单选题】All of the following are mentioned in paragraph 4 as consequences of the new system for workers EXCEPT a loss of
A.
B.
status in the community
C.
opportunities for advancement
D.
contact among workers who were not managers
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