水质自动监测常规五参数是（） A.pH、氨氮、电导率、高锰酸盐指数、浊度 B.高锰酸

Last year I caught the baby cuckoo and put 56. ______
it in a cage outside. Later its mother flew from the cage 57. ______
with food in her mouth. I was happy to see this, because of 58. ______
the mother bird knew much better than I did to feed her 59. ______
baby. But the following morning I found the baby bird60. ______
died. I told the story of my bird to my biology teacher 61. ______
and he explained that what had happened. A mother 62. ______
cuckoo, finds her baby in a cage, will bring it poison63. ______
food. She believes it is good for her baby to die than to 64. ______
live in a cage. I still feel sorry for what I do to the bird.65. ______

天然气是一种清洁燃料，南宁市有的出租车开始使用天然气代替柴油或汽油。已知天然气的热值是7×10⁷J/m³_。当出租车消耗0.2m³天然气时，所释放的热量是       J（假定天然气完全燃烧），若天然气所释放热量的84%被水吸收，能使100kg的水温度升高      ℃。（水的比热容是4.2×10³J/（kg?℃））

简述感觉的相互作用的两种形式

气胎离合器的磨擦片及磨擦毂磨损至什么程度必须更换？

为了在约定的未来某一时点清偿某笔债务或积累一定数额资金而必须分次等额提取存款准备金是指( )。

A．偿债基金
B．预付年金
C．递延年金
D．永续年金