更多“由企业在物质毒性、燃烧、爆炸等特性基础上确定危险物质及其临界”相关的问题
总线的半同步通信方式( )
A. 不采用时钟信号,只采用握手信号B. 既采用时钟信号,又采用握手信号C. 既不采用时钟信号,又不采用握手信号D. 以上都不正确
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在确定生产批量时,不是依照预测而是依照一定期间的净需求相加而得的方法是()
A.经济订购批量法B.按需确定批量法C.固定批量法D.定期订购法
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测量二次回路的绝缘电阻时应注意()。
A.断开本路交直流电源
B.断开与其他回路的连接
C.拆除电路的接地点
D.测量完毕应恢复原状
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中性粒细胞受损发生脂肪变性,胞浆中出现
A.中毒颗粒
B.空泡
C.卡波环
D.染色质小体
E.杜勒小体
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大抵是对那些过分关心的回帖有些不堪承受的好笑,她于是在自己的一首诗后的跟帖做了一个不______的答复:文字只是一种姿态,不要把作者和其笔下的人物作______的链接。 填入划横线部分最恰当的一项是:
A.领情 无谓B.明智 相应C.在意 无端D.冷静 对等
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在信息安全审计期间,所收集数据的范围应根据以下哪个选项确定:()
A.所需关键信息的可用性
B.审计师对环境的熟悉程度
C.受审方查找相关证据的能力
D.正在执行的审计的目的和范围
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有关阴道作用,正确的说法是()。
A.是性交器官 B.能产生月经 C.是胎儿娩出通道 D.腺体能分泌黏液润滑阴道口 E.后穹隆是某些疾病诊断或手术的途径
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对个人理财业务产生影响的社会制度包括( )。 A.经济金融制度???B.养老保险制度###SXB##
A.经济金融制度???
B.养老保险制度
C.失业保险制度???
D.医疗保险制度
E.义务教育制度
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Oil is the substance that lubricates the world’s economy. Because so many of our modern technologies and services depend on oil, nations, corporations, and institutions that control the trade in oil exercise extraordinary power. The "energy crisis" of 1973-1974 in the United States demonstrated how the price of oil can affect US government policies and the energy-using habits of the nation. By 1973, domestic US sources of oil were peaking, and the nation was importing more of its oil, depending on a constant flow from abroad to keep cars on the road and machines running. In addition, at that time a greater percentage of homes and electrical plants were run on petroleum than today. Then, in 1973, the predominantly Arab nations of the Organization of Petroleum Exporting Countries (OPEC) resolved to stop selling oil to the United States. The move was prompted by OPEC’s desire to raise prices by restricting supply and by its opposition to US support of Israel in the Arab-Israeli Yom Kippur War. The embargo (禁运) created panic in the West and caused oil prices to shoot up. Short-term oil shortage drove American consumers to wait in long lines at gas pumps. In response to the embargo, the US government enforced a series of policies designed to reduce reliance on foreign oil. These included developing additional domestic sources (such as those on Alaska’s North Slope), resuming extraction at sites that had been shut down because of cost inefficiency, capping the price that dometic producers could charge for oil, and beginning to import oil from a greater diversity of nations. The government also established a stockpile (贮存) of oil as a short-term buffer (缓冲) against future shortages. Stored underground in large salt caves in Louisiana, this stockpile is called the Strategic Petroleum Reserve, and currently contains over 600 million barrels of oil, roughly equivalent to one month’s supply.
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根据索洛模型,对于一个穷国而言,人均资本存量很低。其他条件不变,如果该国提高储蓄率,那么
A. 人均收入水平将会较快增加 B. 人均收入水平下降 C. 人均水平不变 D. 人均收入水平较慢增加
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市场需求曲线是个人需求曲线的水平加总,因此,市场需求曲线连续的必要条件 是每个人的需求曲线是连续的。
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分别定义Teacher(教师)类和Cadre(干部)类,采用多重继承方式有这两个类派生出新类Teacher_Cadre(教师兼干部)。要求: (1)、在两个基类中的包含姓名、年龄、性别、地址、电话、等数据成员。 (2)、在Teacher类中包含数据成员title(职称),在Cadre类中还包含数据成员post(职务),在Teacher_Cadre类中还包含数据成员wages(工资)。 (3)、对两个基类中的姓名、年龄、性别、职称、地址、电话等数据成员用相同的名字,在引用数据成员时制定作用域。 (4)、在类中声明成员函数,在类外定义成员函数 。 (5)、在派生类Teacher_cadre的成员函数show中调用Teacher类中的display函数。输出姓名,年龄,性别,职称,地址,电话,然后再用cout语句输出职务与工资。
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