导致血源性肺脓肿最常见的病原菌是（） A.表皮葡萄球菌 B.铜绿假单胞菌 C.金黄色 发布时间：2017-08-10 18:02 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 导致血源性肺脓肿最常见的病原菌是（）A.表皮葡萄球菌B.铜绿假单胞菌C.金黄色葡萄球菌D.肺炎克雷伯杆菌E.链球菌
题型：单项选择题 A1/A2型题 短语填空。 watch out for；get away from；see sb. off；by air；on the other hand；be caught in；pull up；hold on to 1. I won't be able to ________ the office before 7 o'clock. Shall we meet at 8? 2. The child ________ the back of the chair to stop himself from falling. 3. The cashiers were asked to ________ forged banknotes.4. Mr.Smith is not at his office. He has gone to the airport to ________ his friend ________.5. They would love to have kids, but ________, they don't want to give up their freedom. 6. The policeman ________ the motorist and asked to see his license. 7. Now many people prefer traveling ________, because it is much quicker.8. The mountain climbers ________ a thunderstorm and couldn't get back to their camping site. 查看答案
题型：单项选择题 A1/A2型题 已知：①1molH2分子中化学键断裂时需要吸收436kJ的能量 ②1molCl2分子中化学键断裂时需要吸收243kJ的能量 ③由H原子和Cl原子形成1molHCl分子时释放431kJ的能量。 下列叙述正确的是 [ ]A．氢气与氯气反应生成2mol氯化氢气体，需要释放183kJ的热量B．氢气与氯气反应生成2mol氯化氢气体，需要吸收183kJ的热量C．氢气与氯气反应生成1mol氯化氢气体，需要吸收183kJ的热量 D．氢气与氯气反应生成1mol氯化氢气体，需要释放183kJ的热量 查看答案