如图,分别用力F1、F2、F3将质量为m的物体由静止沿同一固定光滑斜面以相同的加

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问题:

如图,分别用力F1、F2、F3将质量为m的物体由静止沿同一固定光滑斜面以相同的加速度从斜面底端拉到斜面的顶端,在此过程中,F1、F2、F3做功的功率大小关系是(     )

A.P1=P2=P3

B.P1>P2=P3

C.P3>P2>P1

D.P1>P2>P3

考点:功率
题型:选择题

529与478的和是(    )。

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Many cancer patients are finding new hope in an unusual approach to cancer treatment. The common method has been developed by Carl Simonton, a specialist in the science of tumors.  1 can sometimes be "truly amazing," he says, when a cancer   2  lets his mind take part in the treatment.
Simonton remembers that his first patient might have been thought to be a "  3 ” case by some. "He was a sixty-one-year-old man with very severe throat cancer.  He had lost a great deal of weight. He could  4 swallow his own saliva and could eat no food.
"I taught him to  5  and mentally see his disease," Simonton says. "Then I had him  6  an army of white blood cells coming, attacking and  7 the cancer cells. The results of the treatment were both exciting and frightening. Within two weeks his cancer had noticeably become smaller and he was quickly gaining weight. I say it was '  8 ' because I had never seen such a change. I wasn't sure what was going on. I also didn't know what I would do if things went wrong. But  9 didn't go wrong.
"We may believe that we have the power in our own bodies to fight cancer as well as the power to   10  the disease in the first place.  With those patients who are willing to stay with us and try, we always find that the cancer has filled some emotional need."
小题1:1.
A.ResultsB.ResearchesC.RecordsD.Replies
小题2:
A.specialistB.authorC.patientD.agent
小题3:
A.hopefulB.hopelessC.valuableD.worthless
小题4:
A.easilyB.mostlyC.carefullyD.barely
小题5:
A.worryB.be nervousC.relaxD.get angry
小题6:
A.supposeB.observeC.pretendD.picture
小题7:
A.overcomingB.managingC.treatingD.threatening
小题8:
A.frighteningB.interestingC.amusingD.relaxing
小题9:
A.IB.weC.theyD.it
小题10:
A.carryB.takeC.produceD.find
题型:选择题

李老师是某青少年服务机构的督导,她负责新来机构实习的社会工作专业学生的督导工作。下列李老师的督导内容汇总,体现教育性功能的是()

A.与实习生讨论和制定实习计划

B.鼓励实习生坚信专业发展前景

C.向实习生介绍机构与所处社区的关系

D.提醒实习生在服务青少年时的注意事项

E.向实习生讲解有关青少年心理特征知识

题型:选择题

白匈奴是指()

A.厭哒人

B.吐火罗人

C.大月氏

D.乌桓

题型:选择题

电化学腐蚀必须满足的条件是()。

A、金属上各部分存在着电极电位差

B、具有电极电位差的部分金属处于相连接之中

C、具有电极电位差的各部分金属放在相互连通的点解质溶液中

D、以上全是

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