【单选题】A tank 36 ft. by 36 ft. by 6 ft. is filled with water to a depth of 5 ft. If a bulkhead is placed in the center of the tank running fore-and-aft along the 36-foot axis,how will the value of the moment...
A.
The moment of inertia would remain unchanged
B.
The moment of inertia would be 1/4 its original value
C.
The moment of inertia would be 1/2 the original value
【单选题】如图所示电路,已知电流源 i c = 2 + 2 sin2π ft (mA), 则 u L 为 ( ) V 。
【判断题】正常情况下。胰岛素的分泌几乎都是由于进餐引起的
【单选题】调价计算公式,如:其中Ft1 、Ft2 、Ft3… …Ftn 是指各可调因子的( )指数。
【简答题】单边衰减指数信号2e -0.5t 的MATLAB实现如下: A=2:a=-0.5: t=0:0.001:10; ft=A*exp(a*t): plot(t,ft); title('单边衰减指数信号'); grid on;
【单选题】(2011)亚临床甲亢的甲状腺功能表现是