4吨的20%等于1吨的45.______.(判断对错)

题型:解答题

问题:

4吨的20%等于1吨的
4
5
.______.(判断对错)
考点:百分数的计算,百分数的应用题
题型:解答题
Many students have hobbies, such as reading, painting, growing vegetables in their gardens, and looking after animals. Some hobbies are relaxing and ___(46) are creative. Hobbies can develop your interests and help you learn new skills.
David Smith is a student. His hobby is writing. ___(47) the summer of 2000, he spent four weeks on a summer camp. As well as the usual activities, such as sailing, climbing and mounting biking, there was a writing workshop with a profession ___(48). “She asked us to imagine that we were in a story. Then we wrote about our ___(49) at the camp.”
In senior high school David wrote a story about teenage life, and it ___(50) as a book in 2003. Many teenagers love his book, and as a result, David has become a ___(51) young writer.
David has been very lucky ___(52) his hobby has brought him enjoyment and success. But he is ___(53) interested in many other things. “I like playing volleyball, too.” says David. “I spend some of my free time playing volleyball for my school team. ___(54) I’ll write more books in the future, but I’m not sure.”
It’s something difficult ___(55) that we shouldn’t spend all our time on our favourite hobby. There are many other interesting things to do in life, and we should try to do something new or different.
小题1:
A.otherB.othersC.the otherD.another
小题2:
A.DuringB.AtC.ForD.On
小题3:
A.managerB.doctorC.singerD.writer
小题4:
A.experiencesB.examplesC.excusesD.experiments
小题5:
A.took outB.tried outC.came outD.went out
小题6:
A.successfulB.normalC.politeD.lonely
小题7:
A.orB.butC.becauseD.though
小题8:
A.tooB.alsoC.onlyD.either
小题9:
A.UsuallyB.ImmediatelyC.MaybeD.Once
小题10:
A.rememberB.remembersC.rememberedD.to remember
题型:解答题

酶的最适pH是()

A.酶的特征性常数

B.酶促反应速度最大时的pH

C.酶最稳定时的pH

D.与底物种类无关的参数

E.酶的等电点

题型:解答题

项王军壁垓下,兵少食尽,汉军及诸侯兵围之数重。夜闻汉军四面皆楚歌,项王乃大惊曰:“汉皆已得楚乎?是何楚人之多也!”项王则夜起,饮帐中。有美人名虞,常幸从;骏马名骓,常骑之。于是项王乃悲歌慷慨,自为诗曰:“力拔山兮气盖世,时不利兮骓不逝;骓不逝兮可奈何,虞兮虞兮奈若何!”歌数阕,美人和之。项王泣数行下。左右皆泣,莫能仰视。

——选自《垓下之围》

这里运用了哪些人物描写方法?

题型:解答题

起吊工具时,不进行试吊的违章级别是什么?

题型:解答题

对于三相短路故障考核电压为光伏电站并网点();两相短路故障考核电压为光伏电站并网点()。

A.线电压;相电压

B.线电压;线电压

C.相电压;相电压

D.线电压;线电压

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