This passage is intended for someone who ______ . [br] To see whether there is l

游客2023-09-25  13

问题 This passage is intended for someone who ______ . [br] To see whether there is leak of air, you should first ______ .

选项 A、pump some air into the tube
B、replace the tyre
C、examine the valve
D、check the wheel

答案 C

解析
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