Mary （) the keys to her bedroom at last.A: findsB: findC: found

Mary ______her keys in her office and she had to ______out of the house.

A. forgot, keep

B. forget, keep

C. left, be kept

D. leaved, be kept

A．a key

B．two keys

C．three keys

D．four keys

A．two related keys are

B．a key is

C．two unrelated keys are

D．three keys are

A、every of her keys; none

B、all of her keys; not every one

C、all of her keys; none

D、her all keys; not all

A．two related keys ale

B．a key is

C．two unrelated keys ale

D．three keys ale

A.You must use numeric keys

B.You can use the same keys for storage locations in each plant

C.You must use different keys for plants and company codes

D.You can use the same keys for plants in each company code

A.Public keys must first be exchanged to enable data encryption, and then the system exchange host keys to enable authentication without passwords.

B.The system must exchange host keys to enable data encryption, and individual users must exchange public keys to enable authentication without passwords.

C.A key pair must be obtained from a CA to enable data encryption, then host keys must be exchanged to enable authentication.

D.A key pair must be obtained from a CA to enable authentication, then host keys must be exchanged to enable data encryption.

A.get

B.keys

C.sort

D.clear

Technologies are not the real keys in terms of the success of EC.()