可逆反应mA(s)+nB(g)pC(g)+qD(g) ΔH=Q kJ·mol-1在反应过程中,当其它条件不变时,C的体积分数Φ(C)在不同温度(T)和不同压强(P)的条件下随时间(t)的变化关系如图所示。 下列叙述正确的是( ) A.T1 > T2 P1 > P2 B. Q > 0 C. m+n < p+q D.该反应一定具有自发性
Progress______ so far very good and we are sure that the work will be finished on time.
Charles was alone at home, with_______ looking after him.
It is often ______ that human beings are naturally equipped to speak.
I can’t leave. She told me that I ______ stay here until she comes back.
—— Do you mind my opening the window? It’s a bit hot in here. —— ______ , as a matter of fact