卸荷活门与发动机驱动的定量泵结合使用,其目的是(). ["防止油流的过度损失。","消除油泵的压力脉动。","在工作系统不工作时,卸去系统的压力。","在工作系统不工作时,卸去油泵的工作压力。"]
带电显示器的一次符号() ["
![](https://assets.asklib.com/psource/201505150938046041.jpg)
","
![](https://assets.asklib.com/psource/201505150938099668.jpg)
","
![](https://assets.asklib.com/psource/2015051509381447296.jpg)
","
![](https://assets.asklib.com/psource/2015051509381999649.jpg)
"]
贷款人应当建立()的贷款管理制度。 ["A、审贷分离","B、分级审批","C、一次核定","D、随用随贷"]
根据土的前期固结压力,压密状态可分为()、()、()。
借款人与贷款人的借贷活动应当遵循()原则。 ["A.平等","B.自愿","C.公平","D.诚实信用"]
砂类土中粗砂的分级标准为()。