数字签名技术实现的基础是密码技术。（）
A. 正确
B. 错误
下列属于以合伙企业名义取得的收益的有（）。
A. 合伙企业的公共积累资金
B. 未分配的利润
C. 合伙企业债权
D. 合伙企业取得的工业产权和非专利技术
The securing of passenger cars on a Ro-Ro vessel requires（）.
A. simple and lightweight equipment
B. low labor intensive equipment
C. specially designed equipment to avoid vehicle damage
D. All of the above
Badly leaking refrigeration compressor discharge valves will cause（）.
A. overfeeding of the expansion valve
B. damage to the condenser
C. constant running of the compressor
D. flooding of the receiver
微信支付 
支付宝支付