中国向北流程最长的河流是新疆境内的(),也是中国唯一流入北冰洋的河流。
A、伊犁河
B、博尔塔拉河
C、额尔齐斯河
参考答案:C
某体积可变的密闭容器,盛有适量的A和B的混合气体,在一定条件下发生反应:A+3B2C。若维持温度和压强不变,当达到平衡时容器的体积为VL,其中C气体的体积占10%。下列推断正确的是 [ ]
①原混合气体的体积为1.2V L
②原混合气体的体积为1.1V L
③反应达到平衡时气体A消耗掉0.05VL
④反应达平衡时气体B消耗掉0.05V L
A.②③
B.②④
C.①③
D.②④
The nurse is caring for a client who complains of lower back pain. Which instructions should the nurse give to this client to prevent back injury
A.Bend over the object you're lifting.
B.Narrow the stance when lifting.
C.Push or puI1 an object using your arms.
D.Stand close to the object you're lifting.