超速试验主要检查机器在特殊情况下超速运转的能力。

题型:判断题

问题:

超速试验主要检查机器在特殊情况下超速运转的能力。

考点:初级钳工初级钳工题库
题型:判断题
过椭圆
x2
25
+
y2
9
=1
的中心的直线与椭圆交于A、B两点,F1是椭圆的右焦点,则△ABF1的面积的最大值为______.
题型:判断题

短文改错(共10小题,每小题1.5分,共15分)

此题要求改正所给短文中的错误。对标有题号的每行作出判断;如无错误,在该行右边横线上面一个勾(√);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,在该行右边横线上写出该词,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:在错的词下面划一横线,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。

It rained very hardly last summer and the little                                  44.       

stream near our house became big river.It burst                                     45.       

through the bank.The fields all round was soon full                        46.       

of water.Luckily,the water didn’t reach any of the                      47.       

house in our village.But the bursting water from the                    48.       

river carried away our wooden bridge,that was over                    49.       

three hundred of years old.We were very sorry to                                   50.       

lose the oldest thing we have had for such a                                       51.        

long time.We will build a new bridge,so it will                              52.       

not be so familiar than the one we had before!                               53.       

题型:判断题

全草类药材一般的采收时间是()

A.春末夏初

B.秋冬季节

C.开花前

D.茎叶生长茂盛时

E.果实成熟时

题型:判断题

被许可人以欺骗、贿赂等不正当手段取得注册登记许可的,应当予以撤销。 ( )

题型:判断题

牛膝具善下行之性,但此特点不能用于()

A.腰膝酸痛

B.口舌生疮

C.气喘咳嗽

D.难产、胞衣不下

E.阴虚阳亢眩晕

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