下列建设单位向施工单位作出的意思表示中，为法律、行政法规所禁止的是（）。 ["明示报名参加投标的各施工单位以低价竞标","明示施工单位在施工中应优化工期","暗示施工单位采用《建设工程施工合同（示范文本）》签订合同","暗示施工单位在非承重结构部位使用不合格的水泥"]
IPSec VPN is a widely-acknowledged solution for enterprise network. Which three IPsec VPNstatements are true？（） ["IKE keepalives are unidirectional and sent every ten seconds","IPsec uses the Encapsulating Security Protocol （ESP） or the Authentication Header （AH）protocol for exchanging keys","To establish IKE SA, main mode utilizes six packets while aggressive mode utilizes only threepackets","IKE uses the Diffie-Hellman algorithm to generate symmetrical keys to be used by IPsec peer"]
下列哪项属于控制手段类指引（）。 ["全面预算","评价报告","合同管理","内部信息传递"]
创新成果的营销策略主要有（）。 ["产品策略","价格策略","分销渠道策略","促销策略"]
医疗器械广告应当经（）审查批准；未经批准的不得刊登、播放、散发和张贴。 ["工商行政管理部门","质量技术监督部门","药品监督管理部门","国家广播电影电视总局"]
传染源
