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【单选题】
GTS1型探空仪基测箱面板d开关应与T键连动使用,按下T键, d开关位于T,这时显示的是( )。A.
通风干湿表的干球温度
B.
基值测定瓶内的温度
C.
通风干湿表的湿球温度
D.
气压表附温
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【单选题】America has had many Presidents who have been famous all over the world. People from other countries know the names Washington, Kennedy and so on. However, many men who have served as President of the...
A.
his people didn' t regard him as a great man
B.
he tried a lot of means to get rid of slavery
C.
his high ideal made an impression on American people
D.
he did a lot of things against laws
【简答题】I t ’ s ha rd for the famous people to have their ______ _/ 'pra ɪ v ə t / time .
【单选题】在一定条件下，Na 2 CO 3 溶液中存在平衡CO 3 2- ＋H 2 O HCO 3 - ＋OH － 。下列说法错误的是
A.
稀释溶液， 增大
B.
通入CO 2 ，溶液pH减小
C.
升高温度，c(CO 3 2- )减小
D.
加入NaOH固体， 减小
【单选题】在一定条件下，Na 2 CO 3 溶液存在水解平衡：CO 3 2- ＋H 2 O HCO 3 - ＋OH - 。下列说法正确的是 [ ]
A.
稀释溶液，水解平衡常数增大
B.
通入CO 2 ，平衡朝正反应方向移动
C.
升高温度， 减小
D.
加入NaOH固体，溶液pH减小
【单选题】America has had many Presidents who have been famous all over the world. People from other countries know the names Washington, Kennedy and so on. However, many men who have served as President of the...
A.
his people didn't regard him as a great man
B.
he tried a lot of means to get rid of slavery
C.
his high ideal made an impression on American people
D.
he did a lot of things against laws
【单选题】在一定条件下, Na 2 CO 3 溶液存在水解平衡。下列说法正确的是( )
A.
稀释溶液，水解平衡常数增大
B.
通入 CO 2 ，平衡向正向移动
C.
加入 NaOH 固体，溶液 pH 减小
D.
降低温度，平衡向正向移动。
【单选题】America has had many presidents who have been famous all over the world. People from other countries know the names Washington, Kennedy and so on. However, many men who have served as president of the...
A.
his people didn't regard him as a great man
B.
he tried a lot of means to get rid of slavery
C.
his high ideal made an impression on American people
D.
he did a lot of things against laws
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