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在转盘旋转钻井法中，方钻杆接在水龙头下方、卡在转盘中，下部承接（）
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根据财务管理的信号传递原则，下列说法正确的是（）
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下列项目中，属于其他应付款核算范围的是( )。 A．暂收款项 B．经营性租入固定资产的应付租金 C．应付包装物租金 D．出借包装物押金
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早产儿使用铁剂预防贫血起始的月龄是（）
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前厅接待服务过程，可以不告诉客人退房结账时间。
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什么情况下需要负荷预测？
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Today ,as in every other day of the year ,more than 3000 U.S. adlescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime,it can be expected that of these 3000 about 23 will be murdered,30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweithts all other factors, whether voluntary or involuntary, as a cause of death. Since the late 1970s, when daily smoking among high school seniors reached 30 precent , smoking rates among youth have declined . While the decline is impressive ,several important issues must be raised. First, in the past several years,smoking rates among youth have declined very little. Second,in the late 1970s ,smoking among male high school seniors exceeded that among female by nearly 10 percent . The statistic is reversing.Third ,several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent . Finally, thouth significant declines in adolescent smoking have occurred in the past decade,no definite reasons for the decline exist. Within this context,the Naional Cancer Instiute (NCI) began its current effort to determine the most effecive measures to reduce smoking levesl among youth. By "dropout" the author means（）.
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在我国的司法体制中，审判工作体制包括：()
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缓倾斜煤层的倾角一般为（）。
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影响珍珠价格的因素（5个）？简单介绍？