铁路罐车总容积与（）的容积误差为总不确定度不大于±0.4%。
A、有效容积
B、安全容积
C、检定容积
D、全容积
参考答案：C
小医生,下列各句均有一处错误，请找出并改正。
1. Can you talk us a story about Lei Feng?
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2. Jim is too young,he can’t look after him.
3. There is wrong something with his eyes.
4. His friend went to Xi’an two days before.
5. The girl felt happily at her birthday party.
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