【判断题】【消耗次数:1】
为了实现增产增收的目的,建议应用质量合格的花生专用肥料,施用量及施用方法应按说明书的要求施用
正确
错误
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相关题目
【多选题】 主要田间工作记载时,各地施用农家肥的质量一同,尽量将地段种类肥料施用总量,按照农业部门通用的折合方法,折合成()含量,记入该项目的备注栏。
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【判断题】 钙镁磷肥是碱性肥料,适合在酸性土壤中施用
①  正确
②  错误
【判断题】 氯化钾是生理碱性肥料,适宜在酸性土壤中施用
①  正确
②  错误
【判断题】 窑灰钾肥是强碱性肥料,施用时要注意不要烧坏作物
①  正确
②  错误
【判断题】 种肥施用一般选择高度腐熟的有机肥料或速效化肥
①  正确
②  错误
【判断题】 石灰肥料能和铵态氮肥、腐熟的有机肥和水溶性磷肥混合施用
①  正确
②  错误
【单选题】 水旱轮作中,磷肥施用应()。
①  A.优先施于水稻
②  B.优先施于旱作
③  C.水旱等量施
④  D.重水轻旱
【单选题】 病害侵染过程的(),最适宜施用內吸剂。
①  接触期
②  侵入期
③  潜育期
④  发病期
【判断题】 氮肥要深施,最好与有机肥混合施用
①  正确
②  错误
【判断题】 磷肥的施用原则是减少与土壤的接触面积
①  正确
②  错误
随机题目
【单选题】 打靶3 发,事件Ai表示“击中i发”,i= 0,1,2,3。那么事件<img class=jc-formula data-tex=A={ A }_{ 1 }\cup { A }_{ 2 }\cup { A }_{ 3 } src=https://huaweicloudobs.ahjxjy.cn/89D15616050B7F4278D8D6DF780248B4.png style=vertical-align: middle;/>表示
①  全部击中
②  至少有一发击中
③  必然击中
④  击中3发
【单选题】 设<img class=jc-formula data-tex=0P(A)1,0P(B)1,P(A\left| B \right) +P(\overline { A } \left| \overline { B } \right )=1 src=https://huaweicloudobs.ahjxjy.cn/8A1B3E06E77B99186F1AA8E01E3316C3.png style=vertical-align: middle;/>,则下列结论成立的是
①  事件A和B互不相容;
②  事件A和B互相对立
③  事件A和B互不独立
④  事件A和B互相独立
【单选题】 设A,B,C为三个事件,且A,B相互独立,则以下结论中不正确的是
①  若P(C)=1,则AC与BC也独立.
②  若P(C)=1,则<img class=jc-formula data-tex=A\cup C src=https://huaweicloudobs.ahjxjy.cn/ECFBDDF24996917EA300075A2EF96068.png style=vertical-align: middle; width: 56px; height: 20px; width=56 height=20/>与B也独立.
③  若P(C)=0,则<img class=jc-formula data-tex=A\cup C src=https://huaweicloudobs.ahjxjy.cn/ECFBDDF24996917EA300075A2EF96068.png width=56 height=20 style=font-family: 宋体; font-size: 14px; white-space: normal; vertical-align: middle; width: 56px; height: 20px;/>与B也独立.
④  若<img class=jc-formula data-tex=C\subset B src=https://huaweicloudobs.ahjxjy.cn/5AF7C06E7D78B9242171900D637B5C9F.png style=vertical-align: middle; width: 51px; height: 23px; width=51 height=23/>,则A与C也独立
【单选题】 一口袋中有3个红球和2个白球,某人从该口袋中随机摸出一球,摸得红球得5分,摸得白球得2分,则他所得分数的数学期望为
①  2.5
②  3.5
③  3.8
④  以上都不对
【单选题】 设A,B为两随机事件,且A<img class=jc-formula data-tex=\supset src=https://huaweicloudobs.ahjxjy.cn/37A4B3C430EFA04CF480D02C0DFECE89.png style=vertical-align: middle; width: 20px; height: 17px; width=20 height=17/>B,则下列式子正确的是
①  P(A<img class=jc-formula data-tex=\cup src=https://huaweicloudobs.ahjxjy.cn/9BD598E68F21E65385221B2250659C3A.png style=vertical-align: middle; width: 22px; height: 14px; width=22 height=14/>B) = P(A)
②  P(AB)=P(A)<img width=99 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>
③  P(B|A)=P(B)
④  P(B-A)=P(B)-P(A)<img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>
【单选题】 设<img src=https://huaweicloudobs.ahjxjy.cn/044358115371A01359D17139122ECBCA.png title=4HLX6P8]}I`9_~4~SXU0NKO.png alt=4HLX6P8]}I`9_~4~SXU0NKO.png style=white-space: normal;/>的一个原函数,且<img src=https://huaweicloudobs.ahjxjy.cn/D2A606CDFF44F27A45F7B9B1AC8D29F9.png title=_3([30DGZ00_8XYG~VS`SK7.png alt=_3([30DGZ00_8XYG~VS`SK7.png style=white-space: normal;/>为奇函数,则<img src=https://huaweicloudobs.ahjxjy.cn/B1EF4D45BB73E79FB3629A58EB3ED0C5.png title=[4B}0%TF4S_IH(RC)J%V]M4.png alt=[4B}0%TF4S_IH(RC)J%V]M4.png style=white-space: normal;/>是( )
①  奇函数
②  偶函数
③  非奇非偶函数
④  不确定
【单选题】 It wasn’t until nearly a month later ___ I received the manager’s reply.
①  since
②  when
③  as
④  that
【单选题】 I remember her face but I cannot___ where I met her.
①  recall
②  remind
③  remark
④  remember
【单选题】 If my lawyer ___ here last Saturday, he ___ me from going.
①  had been; would have prevented
②  had been; would prevent
③  were; would prevent
④  were; would have prevented
【单选题】 They have no idea at all ___.
①  where he has gone
②  where did he go
③  which place has he gone
④  where has he gone