The most powerful signal of stress is a change of pitch on the vowel.()
- A正确
- B错误
The most powerful signal of stress is a change of pitch on the vowel.()
1、Which of the following is most suitabl
Which of the following is most suitable for the cultivation of linguistic competence?AA. Sentence-making.BB. Cue-card dialogue.CC. Simulated dialogue.DD. Learning syntax
2、Which one of the following is the most
Which one of the following is the most commonly used layer 2 network device?()A HubB BridgeC SwitchD RouterE RepeatersF None of the above
3、The power factor is a measure of the p
The power factor is a measure of the phase difference between voltage and current and is expressed as the() of the phase angle.AsineBcosineCtangentDcotangent
4、The unit of electrical power is the __
The unit of electrical power is the _____.AampereBkilovoltCwattDfarad
5、()is the most flexible mode of all the
()is the most flexible mode of all the transport modes.AAircraftBShipCTrainDMotor carrier
6、Which of the following pumps is most s
Which of the following pumps is most suitable for an oily water separator?()Areciprocating pumpBvane pumpCmono pumpDaxial-flow pum