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【单选题】
现在乒乓球标准重量是( )克?A.
2.5克
B.
2.7克
C.
2.8克
D.
2.9克
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举一反三
【多选题】关于公路中桩坐标计算所建立的局部坐标系的说法正确的是
A.
以直缓点为坐标系原点,以过原点且指向交点的切线为X'轴,过原点的半径为Y'轴,建立第一个局部坐标系
B.
第一缓和曲线段和圆曲线段在同一个局部直角坐标系当中进行独立坐标计算
C.
第二缓和曲线段和圆曲线段在同一个局部直角坐标系当中进行独立坐标计算
D.
以缓直点为坐标系原点,以过原点且指向交点的切线为X'轴,过原点的半径为Y'轴,建立第二个局部坐标系
E.
第一缓和曲线段在一个局部直角坐标系当中进行独立坐标计算
【单选题】该句从句是? Although we were worried about Jason,we didi not want to show our nervousness.
A.
show our nervousness.
B.
we didi not want to show our nervousness.
C.
Although we were worried about Jason.
【简答题】完形填空 Although in 1947 we were still very new to the atomic (原子的) age, we knew about mushroom clouds. A huge crack (裂缝) spread across the library wall upstairs, sending teachers and _ 1 _ screaming dow...
【简答题】When my two children were young, we took a trip to Disneyland with their grandma. Although the park is about an hour car ride from our home, we decided to spend the night in a hotel, so we could spend...
【单选题】自动扶梯是带有循环运行梯级,用于向上或者向下与地面成( )倾斜角的输送乘客的固定电力驱动设备。
A.
0°～27.3°
B.
15.3°～30.0°
C.
27.3°～35.0°
D.
20°～30.0°
【单选题】We were in the same college, () was male-only at that time.
A.
that
B.
which
C.
it
D.
although
【简答题】( )是带有循环运行梯级,用于向上或向下倾斜输送乘客的固定式电力驱动设备;
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