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【判断题】
若某物质溶液的浓度为c=1.00×10-4mol/L,则其有效数字的位数是2位。
A.
正确
B.
错误
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【单选题】Before attempting to put out a class "C" fire involving an electrical driven centrifugal pump, you should FIRST____.
A.
insulate your shoes
B.
ground the fire hose
C.
secure its power supply
D.
start the fire pump
【单选题】某通信机房设置七氟丙烷预制灭火系统,该系统应由()种启动方式。
A.
1
B.
2
C.
3
D.
4
【单选题】某通信机房设置七氟丙烷预制灭火系统,该系统应有()种启动方式
A.
1
B.
2
C.
3
D.
4
【判断题】( )冷盘配色,应考虑季节变化,”冬暖,夏冷,春秋花”,使人产生舒适愉快的感觉。
A.
正确
B.
错误
【简答题】巨血小板综合征 (giant platelet syndrome)
【判断题】预制灭火系统应设2种启动方式
A.
正确
B.
错误
【简答题】If you see a person collapsed who is in contact with electricity what is the first thing you must do before attempting to switch off the supply?
【单选题】以下能正确定义字符串的语句是( )。
A.
char str[]={'/064'};
B.
char str='/x43';
C.
char str=';
D.
char str[]='/0';
【单选题】Attempting to reach his home before the storm, _____ .
A.
the bicycle of John broke down
B.
it happened that John's bike broke down
C.
the storm caught John
D.
John had an accident on his bicycle
【判断题】Except while taxiing very slowly, it is best to accelerate before attempting a turn. Very sharp turns or attempting to turn as both tend to exert excessive strains on the airplane, and such turns are ...
A.
正确
B.
错误
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