【多选题】根据硅酸盐晶体结构的特点,下面四种说哪种是正确( )
A.
除岛状结构外[SiO 4 ]之间均用桥氧连接
C.
每个O 2- 最多于二个[SiO 4 ]连接
D.
Si 4+ 与Si 4+ 成键,Si 4+ 与O 2- 成键
【简答题】____ regard ____ Contract No.123and 456,we are agreeable ______ D/P terms of payment ____these contracts.
【简答题】These are contracts where specified quantities of cargo have to be carried between specified ports within a specific time frame for an agreed upon payment per unit of cargo. ________ operators usuall...
【单选题】2011年中国共产党迎来建党90周年,以下说法错误的是( )。
A.
中国共产党的建立,得到了列宁领导的第一国际的帮助
C.
毛泽东在《论持久战》中第一次明确提出“七一”是党的诞生纪念日
【单选题】根据硅酸盐晶体结构的特点,下面四种说哪种是不正确( )
A.
除岛状结构外 [SiO 4 ] 之间均用桥氧连接
C.
每个 O 2- 最多于二个 [SiO 4 ] 连接
D.
Si 4+ 与 Si 4+ 成键, Si 4+ 与 O 2- 成键
【单选题】(5) Henley Co's assistant has one final question regarding the recognition of revenue. He has read something about the 5 steps for recognising revenue from contracts with customers and is unsure what ...
A.
Identify the separate performance obligations within the contract
C.
Assess recoverability of amounts within the contract
【单选题】These contracts _____ by the manager today.
【简答题】As both of these contracts are each ______ a value of less than£1000, we shall be glad if you agree to ship the goods to us as before ______ Cash ______ Documents basis.
【判断题】硅酸盐晶体结构特点之一是 Si 4+ 与 Si 4+ 成键, Si 4+ 与 O 2- 成键( )。
【判断题】硅酸盐晶体结构特点之一是 Si 4+ 与 Si 4+ 不能直接 成键,而是通过氧离子相连。