The Three-Tier model of the database system is（）. A: Up mode, mode, Down mode B: Front mode, mode, Rear mode C: External mode, mode, internal mode D: Large mode, Medium mode, Small mode

subtractive color mode refers to A: CMYK mode B: RGB mode C: HSB mode D: LAB mode

Additive color mode refers to A: RGB mode B: HSB mode C: CMYK mode D: LAB mode

What is the most common mode for a firewall？（） A:  routed mode B:  context mode C:  bridged mode D:  transparent mode E:  full security mode

How to access the cardiac function by using ultrasound:( ) A: M<br/>mode B: B<br/>mode C: Spectral<br/>Doppler pattern D: Tissue<br/>Doppler imaging E: All of the above

P mode display A: Program exposure mode B: Aperture priority mode C: Shutter priority mode D: Manual mode

M-mode can be used to demonstrate A: a) Blood flow. B: b) Tissue motion. C: c) Gall stones.

The most commom form in ultrasound clinic applications is ( ) A: A-mode B: B-mode C: Color Doppler D: M-mode

GPRS/EDGE网络有3种运作模式：MODEⅠ、MODEⅡ和MODEⅢ。以下说法正确的是（） A: MODEⅠ可以选择是否配置MPDCH，MODEⅡ不能配置MPDCH，MODEⅢ一定要配置MPDCH； B: MODEⅠ必须配置MPDCH；MODEⅡ可以选择是否配置MPDCH，MODEⅢ不能配置MPDCH； C: MODEⅠ不能配置MPDCH；MODEⅡ必须配置MPDCH；MODEⅢ可以选择是否配置MPDCH； D: 无论何种MODE，均可以不配置FPDCH；

For conventional configuration aircraft, which of the following modes are lateral-directional modes A: Roll-subsidence mode B: Dutch roll mode C: Spiral mode D: Short-period mode E: Phugoid mode