问答题
答：大开大合的腰的动作，讲究转腰旋背，以背带肩，以肩带肘，以肘带腕，手随腰转。强调开合上下左右的幅度。
电梯八大系统通常包括曳引系统、门系统、轿厢系统、重量平衡系统、导向系统、电梯拖动系统、安全保护系统与（ ...
问答题电梯八大系统通常包括曳引系统、门系统、轿厢系统、重量平衡系统、导向系统、电梯拖动系统、安全保护系统与（ ）。
Do not use a column when you wish to show a trend or a ...
判断题Do not use a column when you wish to show a trend or a pattern of relationship between sets of values.
We didn't enjoy the holiday ______ the weather was bad....
单项选择题We didn't enjoy the holiday ______ the weather was bad. A、though B、so C、even though D、because
