主页
学科
搜索
账户
常见问题
当前学科：林木遗传育种
题目：
未知类型
昆虫触角基本构造包括：______、______、______。
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
论述时距的主要表现形式以及各自的内涵是什么？
人力资源的构成内容包括()。
流通蒸汽灭菌时的温度为（）。
男22岁，在公共汽车上，突然腹痛来院急诊，血压0/0，双肺哮鸣音，四肢与腹部有隆起风团，应按照下列哪一项抢救（）
VB中给对象的属性赋值可以通过赋值语句实现。
右前斜位X线摄片上食管压迹加深，提示（）
脑震荡病人严重发生昏迷时，以下哪个穴位不适合按压（）。
The word horsepower(马力) was first used two hundred years ago. (200年前“马力”这个词首次使用。) James Watt had made the first widely used steam(蒸气)engine. He had no way of tellingpeople exactly how powerful it was, for at that time there were no units for measuring (测量)power.Watt decided to find out how much work one strong horse could do in one minute. He called thatunit one horsepower. With this unit he could measure the work his steam engine could do.He discovered that a horse could lift a 3,300-pound weight 10 feet into the air in one minute. Hisengine could lift a 3,300-pound weight 100 feet in one minute.Because his engine did ten times as much work as the horse, Watt called it a ten horsepowerengine.6.The passagesays that Watt made the first widely used steam engine.A.TB.F7.Watt made up a unit of measurement based on the strength of a horse.A.TB.F8.Watt wanted to find a way to lift a 3300-pound weight.A.TB.F9.One horsepower would equal the weight a horse could lift.A.TB.F10.The title of the passageis "How the Term Horsepower Came into Being".A.TB.F
计算题：写出干熄焦热化学方程式。
下列（）因素不属于人口环境。