代号为M24×1.5LH-5g6g的螺纹中，LH表示（）。
A、螺距
B、旋向
C、尺寸代号
D、公差带代号
参考答案：B
It took _____ building supplies to construct these energy-saving houses. It took brains, too. [ ]
A. other than
B. more than
C. rather than
D. less than
波义耳一马略特定律是指当温度不变时，—定量气体的体积和它的压力成（）
A、正比
B、反比
C、A与B都不对
