數(shù)據(jù)庫(kù)錯(cuò)誤: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'limit 1' at line 1]
select title from `demo_menu` where id= limit 1
數(shù)據(jù)庫(kù)錯(cuò)誤: [Table 'my8907748842.demo_' doesn't exist]
SELECT title,keywords,description FROM `demo_` where id=934
蠕動(dòng)泵出廠前泵頭已經(jīng)安裝在驅(qū)動(dòng)器上。用戶(hù)在實(shí)際使用中,若需更換另一型號(hào)的蠕動(dòng)泵泵頭,可參照下列方法進(jìn)行:
3.將所更換泵頭的主軸對(duì)準(zhǔn)驅(qū)動(dòng)器前端連軸器,使泵頭定位孔與驅(qū)動(dòng)器定位銷(xiāo)吻合。
4.重新擰入與泵頭相對(duì)應(yīng)的螺釘。在旋緊螺釘時(shí),應(yīng)盡量?jī)芍葆數(shù)乃删o度相同,且不宜過(guò)緊,以防止下外殼變形而產(chǎn)生運(yùn)轉(zhuǎn)噪聲。(不同規(guī)格泵頭安裝會(huì)多少有一些差異,具體安裝方法請(qǐng)參看泵頭說(shuō)明書(shū))。
友情鏈接: