Glassmaking was the first major industry in the United States.

A:profitable B:productive C:sizable D:specialized

Glassmaking was the first (major) industry in the United States.

A:productive B:profitable C:specialized D:sizable

Glassmaking was the first major industry in the United States.

A:profitable B:productive C:sizable D:specialized

Glassmaking was the first (major) industry in the United States.

A:productive B:profitable C:specialized D:sizable

窗体的边框类型BorderStyle属性默认是Sizable，表示 ______。

A:窗体没有边框 B:窗体是固定单边框 C:固定对话框 D:窗体边框是可调整的

窗体的边框类型BorderStyle属性默认是Sizable，表示 ______。

A:窗体没有边框 B:窗体是固定单边框 C:固定对话框 D:窗体边框是可调整的