定期检查时，不仅要检查涡轮流量计的（），而且要判断涡轮和支架有无异常的情况。
A、叶轮
B、壳体
C、轴承
D、导流器
参考答案：C
（B）根据句意，写出括号内所给单词的适当形式：
小题1:The boys shouted with ____________ when they heard the good news. (excite)
小题2:It is even ___________ today than yesterday. (fog)
小题3:He gave a party to celebrate their ___________. (marry)
小题4:It’s _______ to spend much time playing computer games, I think it’s a waste of time. (mean)
小题5:The Towel Bridge is one of the most famous tourist __________ in London. (attract)
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