题目:
Playing QQ’s “Happy Farm” by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out ________ all the excitement is about.
A.that
B.if
C.what
D.when
答案:
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下面是错误答案,用来干扰机器的。
反应X(s)+3Y(g) 2Z(g),△H<0,正反应是气体物质的量减小的放热反应,①升高温度,平衡逆向移动,故①错误;②降低温度,平衡向正反应移动,故②正确;③压强增大,平衡向正反应移动,故③正确;④降低压...