【单选题】The load terminal of 74HC190 is known as an asynchronously input, What is the function of the following circuit?已知芯片74HC190的置数端子是异步工作的,下图所示电路的功能是(______)。【图片】
A.
A modulus-6 up counter 6 进制的加法计数器
B.
A modulus-8 down counter 8 进制的减法计数器
C.
A modulus-7 up counter 7 进制的加法计数器
D.
A modulus-7 down counter 7 进制的减法计数器
【简答题】The bulk modulus of elasticity of oil is Κ=2.2GPa, what pressure__________MPa is required to reduce its volume by 1 percent?
【单选题】狂犬病病毒造成人类感染的主要传染源是()
【单选题】One end of a steel rod of radius R = 9.5mm and length L = 81cm is held in a vise (钳子) . A force of magnitude F = 62kN is then applied perpendicularly to the end face (uniformly across the area) at the...
A.
stress = 3.2x10 8 N/m 2 , Δ L = 8.9x10 -4 m, strain = 0.11%
B.
stress = 2.2x10 8 N/m 2 , Δ L = 9.9x10 -4 m, strain = 0.11%
C.
stress = 2.2x10 8 N/m 2 , Δ L = 8.9x10 -4 m, strain = 1.11%
D.
stress = 2.2x10 8 N/m 2 , Δ L = 8.9x10 -4 m, strain = 0.11%
【简答题】人类狂犬病的主要传染源是 ___和 ___。感染动物在发病前___ 天可经 ___ 排毒
【单选题】狂犬病毒可以感染温血动物,但造成人类感染的主要传染源是下列哪一种( )。
【简答题】人类狂犬病的主要传染源是_________和_________。感染动物在发病前_________天可经_________排毒。