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【单选题】
锯条的切削角度前角是( )。A.
300
B.
0。
C.
60。
D.
40。
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【简答题】Rewrite the following sentences to give variety to your sentence pattern. It is a very small village. It is located at the foot of a mountain. In front of it flows a stream. The stream supplies the vi...
【单选题】---Kate, _______? ---Junk food? Oh, I hardly ever eat it. You know, it’s unhealthy.
A.
what would you like to eat
B.
how soon will you eat junk food
C.
how often do you eat junk food
D.
what is junk food
【简答题】函数f(x)的定义域为（a，b），其导函数y=f′(x)在（a，b）内的图像如图所示，则函数f(x)在区间（a，b）内极小值点的个数是（ ）个。
【判断题】The most sacred Taoist mountain is Dragon-Tiger Mountain, which is located at the southwestern suburb of Yingtan, Jiangxi Province. It is the birthplace of the Taoist religion and a key scenic and tou...
A.
正确
B.
错误
【单选题】Mesa Verde is the center of the prehistoric Anasazi culture. It is located in the high plateau lands near Four Corners, where Colorado, Utah, New Mexico, and Arizona come together. This high ground is...
A.
means 'basketmakers' in the Navajo language
B.
is unknown today
C.
was given to them by archaeologists
D.
means 'ancient ones' in the Anasazi language
【简答题】听录音，标序号。 ( ) She is in the living room. ( ) What would you like? ( ) I like Chinese food. ( ) They're in the door. ( ) I'd like some fish and vegetables.
【单选题】函数f（x）的定义域为（a，b），导函数f′（x）在（a，b）内的图像如图所示，则函数f（x）在（a，b）内有极小值点的个数为 [ ]
A.
4个
B.
3个
C.
2个
D.
1个
【单选题】函数f（x）的定义域为开区间（a，b），导函数f'（x）在（a，b）内的图象如图所示，则函数f（x）在开区间（a，b）内有极小值点的个数为 [ ]
A.
1
B.
2
C.
3
D.
4
【简答题】函数f（x）的定义域为（a，b），其导函数y=f′（x）在（a，b）内的图象如图所示，则函数f（x）在区间（a，b）内极小值点的个数是______个．
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