应由当期工程成本负担而尚未支付的费用应()。
A.待支付后计入成本
B.在成本中摊销
C.从成本中预提
D.收到发票后计人成本
参考答案:C
—How was your day off, Rick?
—Oh, it was wonderful. We camping and had a good time.[ ]
A. go
B. goes
C. are going
D. went
宽带城域网必须具备IP地址分配能力,能够支持动态和静态IP地址分配,以及支持()功能。
A. NAT
B.IPsec
C.DHCP
D.SSL