SW-220K型转向架空气弹簧盖板上最多可加()调整垫板。
参考答案:30mm
He noticed that the straight part of the dance was different in the afternoon from _______ it had been in the morning. (2006年宜昌市模拟题)
A.that
B.where
C.what
D.which
在使用弹簧测力计测力时,发现指针在零刻度线以上,用这个测力计测出一个力是4N,则该力的大小实际是 [ ]
A. 大于4N
B. 等于4N
C. 小于4N
D. 无法确定