I am a Ghanaian and have got a chinese government scholarship

Godwin, you don't need to apply for the multiple-entry type. As you will study in China for two years, you can apply for the X1 type. After you enter, you can get a residence permit with the X1 at the local exit & entry administration bureau. The residence permit can function as a multiple entry permit. And you can stay as long as your want within the validity of the residence permit.