参照反应Br+H2
HBr+H在整个反应历程中能量变化的示意图判断，下列叙述中正确的是
| A．该反应为吸热反应 |
| B．加入催化剂，该化学反应的反应热改变 |
| C．该反应为放热反应 |
| D．加入催化剂可增大正反应速率，降低逆反应速率 |
相关试题
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
The children loved their day trip, and they enjoyed the horse ride ______.
| A．most | B．more | C．less | D．little |
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— ______ , as a matter of fact
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