华氏温度为122°F,换算为摄氏温度()℃ A: 45 B: 50 C: 33.4 D: 56
华氏温度为122°F,换算为摄氏温度()℃ A: 45 B: 50 C: 33.4 D: 56
医用的高纯度石蜡熔点为()。 A: 40~45℃ B: 45~50℃ C: 50~56℃ D: 56~60℃ E: 60~66℃
医用的高纯度石蜡熔点为()。 A: 40~45℃ B: 45~50℃ C: 50~56℃ D: 56~60℃ E: 60~66℃
秦汉时期已经开始发展铁器成型技术,这句翻译为( ) A: Iron casting technology has already been employed in Qin (220 to 205 BC) and Han dynasties (206 –220 BC). B: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (236 –210 BC). C: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (202 –220 BC). D: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (201 –227 BC).
秦汉时期已经开始发展铁器成型技术,这句翻译为( ) A: Iron casting technology has already been employed in Qin (220 to 205 BC) and Han dynasties (206 –220 BC). B: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (236 –210 BC). C: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (202 –220 BC). D: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (201 –227 BC).
设函数$f(x) = x(x - 1)(x - 2) \cdots (x - 99)$,则$f'(0) = $( ) A: 99 B: -99 C: 99! D: -99!
设函数$f(x) = x(x - 1)(x - 2) \cdots (x - 99)$,则$f'(0) = $( ) A: 99 B: -99 C: 99! D: -99!
已知R={A,B,C,D,E,F,G},函数依赖集F={BC→A,BC→E,A→F,F→G,C→D}。则R达到了第几范式? A: 1NF B: 2NF C: 3NF D: 4NF
已知R={A,B,C,D,E,F,G},函数依赖集F={BC→A,BC→E,A→F,F→G,C→D}。则R达到了第几范式? A: 1NF B: 2NF C: 3NF D: 4NF
基于VB语言,( )是日期型常量 A: "2/1/99" B: 2/1/99 C: D: 2/1/99 E: F: {2/1/99}
基于VB语言,( )是日期型常量 A: "2/1/99" B: 2/1/99 C: D: 2/1/99 E: F: {2/1/99}
如图.在梯形ABCD中,AD//BC,∠B=90°,∠C=45°,AD=1,BC=4,F为AB中点,EF//DC交BC于点F,求EF的长.
如图.在梯形ABCD中,AD//BC,∠B=90°,∠C=45°,AD=1,BC=4,F为AB中点,EF//DC交BC于点F,求EF的长.
A、99%B、1%C、20%D、50%
A、99%B、1%C、20%D、50%
图所示电路完成的逻辑功能是( )。 A: F=+BC B: F=BC C: F=A D: F=
图所示电路完成的逻辑功能是( )。 A: F=+BC B: F=BC C: F=A D: F=
Later in 221 BC, ____________ , Emperor of the Qin Dynasty, conquered all the states and unified China.
Later in 221 BC, ____________ , Emperor of the Qin Dynasty, conquered all the states and unified China.