题目:
“一带一路”建设中,要发挥陕西、甘肃综合经济文化和宁夏、青海民族人文优势,打造()内陆型改革开放新高地。
A.青海
B.宁夏
C.西安
D.陕西
答案:
参考答案:C
“一带一路”建设中,要发挥陕西、甘肃综合经济文化和宁夏、青海民族人文优势,打造()内陆型改革开放新高地。
A.青海
B.宁夏
C.西安
D.陕西
参考答案:C
已知f(x)是定义在{x|x>0}上的增函数,且f(
(1)求f(1)的值; (2)若f(6)=1,解不等式f(38x-108)+f(
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卫生部等部门3月1日正式发布公告,撤销食品添加剂过氧化苯甲酰、过氧化钙,自2011年5月1日起,禁止在面粉中添加这两种物质.其中过氧化钙中氧元素的化合价与过氧化氢中氧元素的化合价相同,则过氧化钙的化学式正确的是 [ ]
A.CaO2
B.CaO
C.Ca2O2
D.Ca2O
数据库系统运行过程中,由于应用程序错误所产生的故障通常称为( )。
A.设备故障
B.事务故障
C.系统故障
D.磁盘故障
完形填空。 | ||||
In some areas of the world the weather is very 1_____ and this fact plays an important part in the daily lives of the people. 2_____ they are farmers, fishermen, or sailors, for instance, they 3_____ know about these changes ahead of time. Space scientists and airplane pilots 4_____ need weather 5_____. 6_____ earliest time, men have 7_____ the sky, the wind, and the atmosphere, as well as a variety of other weather signs, in order to make weather 8_____. But often their weather predictions have not been accurate (准确的). Now there are government bureaus (局处) in many places that 9_____ weather conditions very carefully. They use a lot of scientific 10_____ to help them make their forecasts (预报). For instance, they have instruments to 11_____ speed and direction of the wind. Thus they can predict the 12_____ of a storm. They have special balloons, ships, and airplanes to help them 13_____ their accuracy, and they make use of radar, satellites and computers to gather 14____ information. Today when a 15_____ takes off from an airport, he 16_____ know what kind of weather to expect when he reaches his destination (目的地). If there is 17_____ rain or snow in the mountains, a weather bureau can predict the day and 18_____ the hour that a river may overflow (使涨满) its banks many miles away. When a storm is moving in a certain 19_____, the people in that area can learn of it ahead of time and 20_____ it. | ||||
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影响产品单位成本中工资费用变动的因素主要有()。
A.工人出勤率
B.小时工资率
C.产品工时定额
D.单位产品工时消耗