购进材料已验收入库,但结算凭证未到,货款尚未支付。正确的会计处理方法是()。
A. 在材料验收入库时即入账
B. 材料验收入库时暂不入账
C. 月末按暂估价入账
D. 下月初用红字冲回
E. 月末暂不入账,等结算凭证到达后再入账
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请参见图示。以下哪个 IP地址可以分配给主机A的默认网关?()
A. 10.184.0.1
B. 10.192.0.0
C. 10.199.255.254
D. 10.200.255.254
用触诊和X摄片对100名妇女做乳腺检查,触诊有40名阳性,X摄片有70名阴性,两种均阳性者为10名,宜选用下面哪种方法进行假设检验()
A. 四格表χ检验
B. Z检验
C. 配对t检验
D. 配对χ检验
请参见图示。以下哪项可作为RTA上新子网的有效的网络地址?()
A. 10.16.10.16/28
B. 10.16.10.24/28
C. 10.16.10.30/28
D. 10.16.10.56/28
E. 10.16.10.72/28
It’s a configuration that experts are calling a "firewall sandwich," with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich"?()
A. single layer of firewalling
B. multiple layers of firewalling
C. firewall connections in either an active or standby state
D. an architecture in which all traffic between firewalls goes through application-specific servers