Last year some additional measures ________ to protect customers ’ personal information by our company.

Last week our teacher told us 　　　more information about how to protect the environment.

Last year some additional measures ____ to protect personal information by the company. A: are taken B: were taken C: have been taken D: will be taken

Last year some measuresto protect customers' personal information by our company. A: are taken B: were taken C: have been taken D: will be taken

Protect the environment is to protect our mother.

It is important that we _____ wild animals. A: will protect B: should protect C: shall protect D: are protecting

What is the spray used for（） A: To protect the boots from water. B: To protect the soles from heat. C: To protect the floors from soles. D: To protect the boots from rubber.

码元持续时间为Ts的OFDM的最小子载频间隔为? 1/3Ts|1/Ts|0.5/Ts|2/Ts

数字基带信号的码元持续时间为Ts,MSK中两个载波的频差为(<br/>)。 A: 0.5/Ts B: 1/Ts C: 1.5/Ts D: 2/Ts

In the last paragraph, the author suggested that A: piracy to some extent be advocated. B: content providers promote tech innovation. C: all entertainment firms protect the copyright. D: better fee-based services be offered to combat piracy.