桨叶绕水平铰转动，称桨叶（）.A.摆振 B.挥舞 C.变距 发布时间：2019-07-11 08:07 │ 来源：www.tikuol.com 题型：单项选择题 问题： 桨叶绕水平铰转动，称桨叶（）.A.摆振B.挥舞C.变距
题型：单项选择题 短文改错。 此题要求改正所给短文中的错误，对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾；如有错误(每行只有一个错误)，则按下列情况改正：此行多一个词：把多余的词用斜线(╲)划掉,在该行右边横线，写出该词，并也用斜线划掉。此行缺一个词：在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。 注意：原行没有错的不要改。 I've really got to do something to lose weight becauseI'm getting much too fat.I wasn't worried about until I went to see the doctor.He told me that I'd probably had a heart attack while I started eating less.When you're on a diet you have to stop eat too much even though you are always hungry. They may be very hard to do and you certainly need a lot of will-power to succeed.So I will stay in a health farm for a month that I won't be able to eat much so as to stickto my diet.I'll also do plenty of exercise,which won't give me any harm too.Both the diet and the exercise will help me to lose weight and feel more better. 1 .______2. ______3. ______4. ______5.______6. ______7. ______8. ______9. ______10.______ 查看答案
题型：单项选择题 调查某地25岁健康男子144人的身高体重，算得身高的均数与标准差分别为 170.1cm与4.9cm，体重的均数与标准差为别为54.0kg与5.1kg。据此资料体重均数的标准误为（）。A.AB.BC.CD.DE.E 查看答案
