选择电子和原子核相距为无限远（n→∞)时势能为零，因此电子处于束缚状态时，总能量一定是______。

and performance materiality. B. Understand the clients business and industry. C. Perform preliminary analytical procedures. D. Accept the client and perform initial audit planning.

A、D, B, C, A

B、B, A, C, D

C、B, D, A, C

D、D, C, B, A

The VoIP gateway can perform the digitization, () and encapsulation required, and it controls the setup of VoIP calls between the calling device and the called device

A.amplification

B.depression

C.radiation

D.compression

A. Perform a network audit.

B. Form an impression about the network.

C. Use traffic analysis to augment organizational input.

D. Prepare and add to the network description.

A、they are required by GAAS.

B、they pinpoint errors in accounts.

C、they indicate areas of potential risk and misstatement.

D、they are required for tests of controls.

Section A

Directions: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A , B, C, and D.

I'd rather that you ______ the operation right away.

A．perform

B．should perform

C．will perform

D．performed

ading to human population？

A．The Department of Health required Civil Contingency Secretariat to publish documents for the pandemic preparedness.

B．The Department of Health required the UK national committee to co-work with hospital trusts and local authorities.

C．The Department of Health required Civil Contingency Secretariat to make a pandemic plan as soon as possible.

D．The Department of Health requires every hospital to store Tamiflu, the precious flu vaccine.

Anadministrator has verified that no other remote areas are having issues connecting to the sameserver.Which of the following steps should the administrator perform NEXT？（）

A. Determine what has changed

B. Test a solution.

C. Establish the most probable cause

D. Escalate the problem to the right section