初中思想品德课课堂导入的方法有哪些?
参考答案:情境式导入法:材料式导入法;问题式导入法;衔接式导入法。
(14分)一定条件下,物质A~E转化关系如图,其中A为单质,常温下E为无色液体。
(1)若A、C、D均含氯元素,C为氯碱工业的原料,
D溶液具有漂白性,则A与B反应的化学方程式是 ;D溶液可使KI淀粉溶液显蓝色,则D与KI在溶液中反应的离子方程式是 ;过量B溶液与NH4HCO3溶液共热,生成气体G的离子方程式是 ,G遇硝酸蒸气的现象是 。
(2)若A为红色金属,B为某酸的浓溶液,D可形成酸雨的无色气体。A与B反应的化学是 ;a molA与足量的B充分反应后,将产生的D通入NaOH溶液中,恰好完全反应,则所需NaOH的物质的量的范围是 。
(3)上述(1)、(2)中的D都能使品红溶液褪色,利用褪色后的溶液,探究使品红溶液褪色的物质的实验方法是 。
Each machine supporting TCP has a TCP transport entity, either a library procedure, a user process, or part of the kernel. In all case, it manages TCP streams and () to the IP layer.A TCP () accepts user data streams from local process, breaks them into pieces not exceeding 64KB, and sends each piece as a separate IP () . When datagrams containing TCP data arrive at a machine, they are given to the TCP entity,which reconstructs the original byte streams. The IP layer gives no guarantee that datagrams will be delivered properly, so it is up to TCP to time out and () them as need be. Datagrams do arrive may well do so in the wrong order, it is also up to TCP to () them into messages in the proper sequence.
A TCP () accepts user data streams from local process.
A.connection
B.file
C.entity
D.destination