备用的各种液压软管及管接头等用堵头堵塞,更换时要清洗干净。
参考答案:错
Harry Potter is an____book for children, but my cousin doesn’t seem at all_____in it.
A.interesting; interesting
B.interested; interested
C.interesting; interested
D.interested; interesting
该图中正确表示地球自转方向的是()
A.①③
B.②③
C.②④
D.①④