下列选项中定义全局变量的语句正确的是( ) A: SET GLOBAL VAR_NAME=VALUE B: SET @GLOBAL VAR_NAME=VALUE C: SET @@GLOBAL VAR_NAME=VALUE D: SET GLOBAL.VAR_NAME=VALUE

以下不能开启事件调度器的语句是（）。 A: SELECT@@EVENT_SCHEDULER； B: SET GLOBAL EVENT_SCHEDULER=1； C: SET GLOBAL EVENT_SCHEDULER=TRUE； D: SET GLOBAL EVENT_SCHEDULER=ON；

开启事件调度器功能的命令是( )。 A: Set global event_scheduler=1 ; B: Set global event_scheduler=0; C: Set event_scheduler=1; D: Set event_scheduler=ON;

使用pyecharts绘图时，可使用以下哪段代码为图表c添加标题？（ ） A: c.set_global_opts(title_opts=TitleOpts(title="标题文本")) B: c.set_global_opts(title_opts=opts.TitleOpts(title="标题文本")) C: c.set_global_opts(title =opts.TitleOpts(title_opts ="标题文本")) D: c.set_global_opts(title=opts.TitleOpts(title="标题文本"))

能够实现修改系统变量值的语句是： A: SET变量名 = 新值; B: SET GLOBAL变量名 = 值; C: SET @@GLOBAL.变量名 = 值; D: show variables [like '匹配模式']; E: select @@变量名;

People's concern over genetically modified food has ____ a global debate. A: increased B: provoked C: set about D: reduced

It is obvious that Tom _______ his father both in appearance. A: resembles B: vocations C: premiums D: opts

People’s concern over genetically modified food has _____ a global debate that shows no sign of ending soon. A: increased B: provoked C: reduced D: set about

全球公共卫生治理 A: global mass health administration B: global public health governance C: global public Sanitation harness

some 250 years ago, the effects of human activity were_____, or at worst _____. rather than _______ A: riginal, local, global B: local ,regional , global C: global, local, regional D: local, global, regional