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【判断题】
土壤的自净作用,是指土壤通过吸附和解吸、沉淀与溶解、生物净化等过程,使土壤中的污染物浓度降低并消失,最终可使土壤恢复到原有的结构与功能的过程。( )A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】He's a waiter. He works in a _____ . [ ]
A.
post office
B.
bank
C.
restaurant
D.
supermarket
【单选题】He was a friendly waiter. He spoke to the writer_______
A.
friend
B.
as friends
C.
like friends
D.
in a friendly way
【单选题】听力原文： I see that you all made it back to continue your training. We plan to walk you through customer service calls today. Marsha will be instructing you on how to deal with irate customers. We will b...
A.
A speech by the CEO.
B.
A review of employee perks.
C.
A review of company policies.
D.
A training session on how to handle calls.
【简答题】天然大理石属于()石材。
【单选题】We plan to have a meeting ______ the afternoon ______ October 10 th .
A.
in, of
B.
on, in
C.
on, of
D.
in, at
【简答题】He was a friendly waiter. He spoke
to the writer ___.A. friend B. as friends C. like friends D. in a friendly way
【单选题】氢化可的松因保管不当, C17-α- 醇酮基有部分被分解,欲测定未被分解的氢化可的松的含量应采用( )
A.
三氯化铁比色法
B.
紫外分光光度法
C.
异烟肼比色法
D.
四氮唑比色法
【单选题】狭水道内航行采用安全航速是指:
A.
备车航速
B.
地方限速
C.
前进三变为前进一
D.
能够采取适当而有效的行动避免碰撞并能在适合当时环境和情况的距离内把船停住的速度
【单选题】狭水道内航行采用安全航速是指:
A.
备车航速
B.
地方限速
C.
前进三变为前进一
D.
能够采取通当而有效的行动避免碰撞并能在适合当时环境和情况的距离内把船停住的速度
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