书面表达。

     下星期你们全家要去青岛度假，你想请好朋友王林帮忙照顾一下你的宠物狗Doudou。

请给她写一封信说明情况。70词左右。开头已给出，不计入总词数。

Dear Wang Lin,

     My family is going to Qingdao on vacation next week. _________________________________

____________________________________________________________________________

____________________________________________________________________________

                                                                                                                   Yours,

                                                                                                                   Li Hua

电流互感器副边额定电流一般为（）。