Determine Determine which of the following statements concerning LTI systems is false. A: If h(t) is the impulse response of an LTI system and h(t) is periodic and nonzero, the system is unstable. B: If a discrete-time LTI system has an impulse response h[n] of finite duration, the system is stable C: If an LTI system is causal, it is stable D: A continuous-time LTI system is stable if and only if its impulse response h(t) is absolutely integrable.

如果程序中需要用到数学函数，头文件应该表示为（）。 A: B: include " system.h " C: D: include " math.h " E: F: include " stdio.h " G: H: include " string.h "

h) The nervous system controls the secretion of many ______ glands, and some hormones in turn affect the function of the nervous system.

Another<br/>name for a program.() A: desktop B: modem C: network D: output E: presentation F: program G: software H: solid-state I: system<br/>software J: system<br/>unit

Two systems of weights and measures used in the U.S. are ______. A: the U. S. Customary System and the metric system B: the International System and the metric system C: the Imperial System and the metric system D: the Customary System and the Imperial system

If the system goes through a series of changes and finally returns to the initial state, which option is correct about the change of the thermodynamic functions of the system? ( ) A: Q=0, W=0, ΔU=0, ΔH=0 B: Q=0, W=0, ΔU=0, ΔG=0 C: ΔU=0, ΔH=0, ΔG=0, ΔS=0 D: Q=W, W=0, ΔU=0, ΔH=0

Starting system and ignition system belong to the electrical system？

What does the autopilot system include?? Hydraulic system|Mechanical system|Electrical system|All of above

The Atlantic Ocean is ( ). A: a closed system B: an open system C: an isolated system D: a homogeneous system

Engine system includes __________________, starting system, __________________ cooling system, fuel supply system, crank-connection rod mechanism and __________________.