VHF收发信机频率稳定度当小于()
A、15X10—6
B、10X10—6
C、8X10—6
D、5X10—6
参考答案:C
发行人及其承销商违反规定向参与认购的投资者提供财务资助或者补偿的,中国证监会可以责令改正。()
______ they are very tired, they feel happy because they've finally finished their project. [ ]
A. So
B. Although
C. If
D. But