熊熊作业

将已经发生质壁分离的细胞浸入清水中,其吸水能力如何变化?为什么? We must help---when they are in dangerA.othersB.otherC.anotherD.the other They should ______ (help) when they are sick. 过滤阀报价多少? The spark causes a small explosion in the engine .怎么翻译 为什么质壁分离过程中细胞吸水程度一直减小? 一个正在发生质壁分离复原的细胞他的吸水能力.液泡逐渐实验室现有四瓶失去标签的蔗糖溶液(编号为A、B、C、D),已知四瓶蔗糖溶液的浓度都不同.现利用半透膜袋进行渗透实验,装置如图3—10 乘轮船带台湾要多长时间?翻译成英语 一个电阻为18Ω的用电器正常工作时,两端的电压是12V,如果要使用电器在18V的电源上仍能正常工作,则：（ 一个电阻为20Ω的电铃正常工作时,两端的电压是12V,如果电铃在18V的电源上仍能正常工作1.在电路中应串联一个电路,还是并联一个电路?2.这个电阻的阻值是多少? I stayed at home for studied Math and English.什么地方错了? Peter studied for the math test yesterday (whatPeter studied for the math test yesterday (what)句型转换 I s_____ for the math test yesterday He studied for the math test ----he could pass it.A.in order to B.so to C.in order so D.so that 为什么稀硫酸蒸发后会变为浓硫酸?浓硫酸为什么不会蒸发掉? 浓硫酸是不是不易蒸发? 半导体激光治疗仪,激光二极管的供电电话是12.15V,电阻200欧,电阻两端电话分别是2.1和2.7V.半导体激光二极管电压2.1V,请问要改变什么才能让激光二极管更亮呢 锂电池充电时输出端接一个电阻,那么电阻上有电流吗,还是电流是反的? I’m tired out．I stayed up the whole night,______ for my midterm math exam．A．studying B．to study C ．to be studying D．studied这题选A,也不选to do的.有人说是因为前面有逗号隔开了,to do没有表目的的用法了,这样 My father stayed ( ) ( ) work the whole night.He is very tired now 中间两个空填什么啊 Why do you look so tired?I stayed(.)the whole nightA awake.B wake.C waking教教我吧急啊 i stayed uo the whole night,空 for my midterm test为什么空格填的是 studying 而不是 to study（表示目的啊) We stayed up the whole night=? There is no doubt that he is guilty.为什么是同位语从句It is the first time that he has been late for class 是定语从句 世界各国的人口密度各个发达国家一定要有 抗生素中,T>MIC值是什么意思,说的通俗一些. > 如何解释Time>MIC(或T>MIC)? 请问电阻是用电器吗?还有一般题目中“导体两端电压”中导体是什么?用电器可以称作导体吗? UNCLE GEORGE怎么样 Uncle George I think the photo_____by my Uncle George.A to be taken B has taken C was taken为什么不选B King George V reigns over a quarter of the world's people.