同牌号、同型号、同规格的阀门安装前,应在每批数量中抽查( )作强度和严密性试验。A.5% B.10% C.15% D.20%

作者: rantiku 人气: - 评论: 0
问题 同牌号、同型号、同规格的阀门安装前,应在每批数量中抽查( )作强度和严密性试验。
选项 A.5% B.10% C.15% D.20%
答案 B
解析 阀门应按规范要求进行强度和严密性试验,试验应在每批(同牌号、同型号、同规格)数量中抽查10%,且不少于一个。安装在主干管上起切断作用的闭路阀门,应逐个做强度试验和严密性试验。

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  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>