皮皮学，免费搜题
登录
搜题
【单选题】
Then the young man came back because ______ .A.
he got off at the Wrong station
B.
he found he had left his bags on the train
C.
he thought he had left something on the train
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】多级放大器各级之间的耦合连接方式一般情况下有 , , 。
【单选题】For which equation is the enthalpy change correctly described as an enthalpy change of formation?
A.
C(g) + O2(g) → CO2(g)
B.
C(s) + 2O2(g) → CO(g)
C.
2N(g) + 4O(g) → N2O4(g)
D.
2NO(g) + O2(g) → 2NO2(g)
【单选题】Which reaction has an enthalpy change equal to the standard enthalpy change of formation of propane?
A.
3C(g) + 4H2(g) → C3H8(g)
B.
3C(g) + 8H(g) → C3H8(g)
C.
3C(s) + 4H2(g) → C3H8(g)
D.
3C(s) + 4H2(g) → C3H8(l)
【简答题】多级放大器各级之间的耦合连接方式一般情况下有 耦合 , 耦合 , 耦合 。
【单选题】For which equation does the enthalpy change correspond to the enthalpy change of atomisation of iodine?
A.
】
B.
【】
C.
、
D.
、。
相关题目：