题干
—What's in the classroom? — .
A：One blackboard, one TV, six lights.
B：It's nice and clean.
答案(点此获取答案解析）
A
—What's in the classroom? — .
A：One blackboard, one TV, six lights.
B：It's nice and clean.
Z（g），经60s达到平衡，生成0.3molZ。下列说法正确的是（ ）
