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【判断题】
中骨盆平面前后径正常平均值为(11.5cm)
A.
正确
B.
错误
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【单选题】The external circumference of a pair of main bearing shells is slightly larger than that of the bore of the housing which receives themThe difference is termed _____.
A.
nip
B.
nap
C.
gap
D.
lip
【单选题】The external circumference of a pair of main bearing shells is slightly _____ that of the bore of the housing which receives themWhats the meaning of “that” in the sentence above?
A.
less than
B.
lighter than
C.
larger than
D.
smaller than
【简答题】一右利手脑出血患者,自述左侧肢体不是自己的,其出血部位是( )|突发昏迷的高血压患者,入院体查可见双侧瞳孔针尖样大小,其可能的出血部位是( )|某高血压患者突起昏迷,四肢瘫痪。入院体查发现其呼吸极不规则,呼吸频率时高时低,每次呼吸时间长短不一,考虑其病变为( )A. 脑桥出血B. 延髓出血C. 中脑出血D. 右侧顶叶出血E. 左侧顶叶出血
【单选题】已知F 1 ,F 2 是椭圆 x 2 a 2 + y 2 b 2 =1(a>b>0) 的两个焦点,AB是过F 1 的弦,则△ABF 2 的周长是(  )
A.
2a
B.
4a
C.
8a
D.
2a+2b
【单选题】已知点M(-1,2)在直线2ax-by+2=0(a>0,b>0)上,则 4 a + 1 b 的最小值是(  )
A.
4
B.
6
C.
8
D.
9
【单选题】The bearing shells depend on the accuracy of _____ to held them in a truly circular shape.
A.
the gap
B.
the clearance
C.
the bore
D.
the housing
【判断题】离心泵通过离心力的作用来输送和提升水体。靠高速旋转的叶轮带动叶轮中的水作圆周运动,产生离心力,水流在离心力的作用下获得压能而输送出去。( )
A.
正确
B.
错误
【判断题】静定结构在荷载作用下产生的内力与杆件弹性常数、截面尺寸有关。( )
A.
正确
B.
错误
【单选题】The bearing shells depend on the accuracy of__to hold them in truly circular shape accuracy精确度
A.
the gap
B.
the clearance
C.
the bore
D.
the homing
【简答题】柳宗元诗作风格独特,在中唐自成一家,与()合称“韦柳”。
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