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【单选题】
PN结的最大特点是具有( )
A.
导电性
B.
绝缘性
C.
单向导电性
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【单选题】下列可以用作填方土料的是
A.
淤泥
B.
淤泥质土
C.
膨胀土
D.
黏性土
【单选题】以下不是导致血膜分布不均匀的原因是:
A.
未及时擦净推片
B.
推片有缺损
C.
用力不均匀
D.
血量多
E.
玻片表面有油脂
【简答题】. I know I could do so much more if somebody would just have faith in me.
【简答题】(10分)无土栽培是利用营养液栽培作物的一种方法。 (1)下列化学肥料中属于复合肥的是 (填序号)。 ①硝酸铵   ②磷酸二氢铵   ③硝酸钾   ④硫酸钾 (2)某同学要在实验室配制150g溶质质量分数为2%的硝酸钾溶液,需要硝酸钾的质量为 。 (3)现有一种无色的营养液,可能由KNO 3 、Ca(NO 3 ) 2 、K 2 CO 3 、KCl中的一种或几种物质组成,为探究其成分,某同学设计并完...
【判断题】经济计划一般可分为指令性计划和指导性计划两种。
A.
正确
B.
错误
【单选题】Traffic jam and cities, it seems, go hand in hand. Everyone complains about being stuck in traffic; but, like the weather, no one seems to do anything about it. In particular, traffic engineers, trans...
A.
In cities, traffic jam is unavoidable.
B.
Traffic jam is both a sign of failure and a sign of success.
C.
Traffic jam is the consequence of successful cities.
D.
For a successful city, traffic jam is not unprable.
【单选题】ONG
A.
ONJ
B.
OMG
C.
ONG
D.
UNG
【单选题】have faith in
A.
adv. 终于;最后
B.
相信;信任
C.
(与此)同时;其间
D.
投资;入股
【单选题】Which one of the following statements about the use of a continuous inventory system is INCORRECT?
A.
In a retail organisation, a continuous inventory system can be used to keep track of the quantity of each stock item available in its distribution centres
B.
Under continuous inventory, the cost of each receipt of inventory and the cost of each issue from inventory is recorded individually
C.
A continuous inventory system removes the need for periodic physical inventory counts
D.
Both the FIFO and average cost (AVCO) methods of pricing inventory may be used within a continuous inventory system
【多选题】填方土料应符合一定的要求,下列说法正确的是()。
A.
碎石类土、砂土和爆破石碴可用于表层以下的填料
B.
碎块草皮和有机质含量大于8%的土,仅用于无压实要求的填方
C.
淤泥和淤泥质土一般不能用作填料
D.
冻结或液化状态的土壤可用作填土之用
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