The weather is ____________.[ ]
A. cloud
B. snowy
C. sun
答案:B
下列划线成语使用不恰当的一项是 [ ]
A.有的父母习惯在饭桌上表扬或批评孩子,一边吃饭,一边轻描淡写地说几句,显得不够重视,孩子也没听进去,效果自然会差一些。
B.“迎世博·上海欢迎您”展览,以漫画和歌谣这些人民大众喜闻乐见的艺术形式为载体,展现了上海的市容新貌。
C.微笑像和煦的春风,微笑像温暖的阳光,它蕴涵着一种神奇的力量,可以使人世间所有的烦恼都涣然冰释。
D.今天我们提倡的创新,并不是要抛开先哲时贤的成果另起炉灶,而是要站在前辈的肩膀上一步一个脚印地前进,并努力超越前人。
A Bluetooth device can be either a master or a slave and any of the devices within a (71) can be the master.There is only one master and there can be up to (72) active slave devices at a time within a single network.In addition, a device may be a standby slave or a parked slave.There can be up to (73) parked slaves.If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to (74) mode before it can become active.Within a network, all (75) communications are prohibited.
空白处(72)应选择()
A.7
B.15
C.63
D.255