在被积区域[0,л]上y=sinx的定积分等于2。
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刘某为甲公司的董事。甲公司与乙公司签订一购销合同,甲公司在预先支付了数额巨大的货款后得知,乙公司已经严重亏损,资不抵债,没有任何履约能力,且甲公司的预付款已被当地银行划走抵充银行欠款。 刘某得知这一消息,认为此次公司损失巨大,必定会影响本公司股票价格。他首先将自己手中的本公司股票抛售,还建议好友王某等人也抛出该股票。 半月后,甲乙公司购销合同事宜通过媒体向社会公布,消息一出,甲公司股价跌落50%。刘某的行为是什么违法行为?
You are the administrator of your company’s network. A user named Tom in the art department wants to update his Windows 2000 Professional computer so that he can view graphics at the highest resolution. Tom downloads a video card driver from the Internet and then asks of your assistance in installing it. You are unsure of the source of driver. You want to ensure that Tom does not loose productive time because of the incompatible driver. What should you do?()
A. Install the driver in the computer. Save after installing the driver. Restart the computer, then use the last known good configuration to recover the original driver
B. Install the driver in the computer. Save after installing the driver, use hardware troubleshooter then use Recovery Console to recover the original driver
C. Display the advance attributes a parallel works for video card driver file. Install the file, if the contents have been secured
D. Run file signature verification survey to verify that the driver has a digital signature. Do not install otherwise.
根据《中国民用航空无线电管理规定》,民用航空通信、导航、雷达无线电台站的设置,是由()确定。
A. 民航局
B. 国家无线电管理委员会
C. 地方政府
D. 民航地区管理局
公民甲是A市一大型私营连锁超市W的法定代表人,W超市在A市东县、西县、南县均有分店。W超市准备拓宽经营范围,在各分店都增加经营烟草制品零售业务。甲委托乙前往A市东县烟草专卖局办理烟草专卖零售许可证。乙向专卖局工作人员出示了各类申请材料、由甲签署的授权委托书及甲和乙两人的身份证明等文件。若W超市所有分店都准备经营烟草制品零售业务,只需要由W超市的总店申请办理一份烟草专卖零售许可证即可,其他分店都不用再单独办理烟草专卖零售许可证。
A. 正确
B. 错误