国际工程承包合同订立的最主要形式为( )。
A.询价
B.议标
C.招标
D.直接委托
参考答案:C
梅龙高速公路是广东梅州至福建龙岩高速公路,总投资59.57亿元。那么数据5 957 000 000用科学记数法表示是 .
The People's Education Press joined hands with the Longman Group Ltd. in late 80s and early 90s and compiled a textbook series for Chinese ______ teaching.
A.college
B.secondary
C.elementary
D.graduate