《十项制度》中〔〕中规定：低瓦斯矿井中每班至少检查（），高瓦斯矿井每班至少检查（）瓦
题型：填空题
问题：
《十项制度》中〔〕中规定：低瓦斯矿井中每班至少检查（），高瓦斯矿井每班至少检查（）瓦斯。
题型：填空题
* Eastern Standard Time
The table above shows the morning schedule for train X. If Juan took train X on Monday morning, did he arrive at station T on schedule ？（）
(1)Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S.
(2)Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T.
A．条件(1)充分，但条件(2)不充分．
B．条件(2)充分，但条件(1)不充分．
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D．条件(1)充分，条件(2)也充分．
E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．