开式循环海水冷却柴油机的缸套腐蚀主要是由空泡腐蚀引起的。
参考答案：错
解析：开式循环海水冷却柴油机的缸套腐蚀主要是由电化学腐蚀引起的。
_____ into a top university, we students must show a strong ability in spoken and written English.
A．Having been accepted
B．To be accepted
C．Being accepted
D．Accepted
