The only way to determine the ending inventory cost and cost of goods sold in a periodic system is to count the goods.
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They were just about to leave _______the telephone.
A. before
B. when
C. as
D. than
力偶不能使门移动，只可以使门转动。
A. 对
B. 错
ZSnSb11Cu6表示铸造锡基滑动轴承合金，基体为元素锡，主加元素锑的质量分数为11%，辅加元素铜的质量分数6%，余量为锡。
A. 对
B. 错
甲状腺功能亢进术前给予复方碘溶液的目的是( )
A. 增强病人对手术的耐受性
B. 使甲状腺腺体变大,便于手术操作
C. 使甲状腺腺体变小,变韧,利于手术
D. 抑制呼吸道腺体分泌
E. 降低血压
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