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【简答题】
求函数y＝sin 4 x＋2sin xcos x－cos 4 x的最小正周期和最小值；并写出该函数在[0，π]上的单调递增区间
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举一反三
【单选题】The driver admitted that not only___________, but he didn’t have a driving license either.
A.
he was not insured
B.
he was insured not
C.
was he not insured
D.
was not he insured
【单选题】The driver admitted that not only ____, but she didn’t have a driving license either
A.
he was not insured
B.
he was insured not
C.
was he not insured
D.
was not he insured
【简答题】右下图表示温带草原生态系统中部分生物构成的食物网,据图回答问题。 ( 1 )该食物网由 条食物链组成。构成生态系统成分中,图中没有画出的生物成分是 。写出 最长 的一条食物链 。(请用 → 连接。) ( 2 )蛇和鹰之间存在两种关系,一种是竞争关系,另一种是 关系。 ( 3 ) 该食物网中个体数量最多的生物是 ,食物网中所有生物进行生命活动的能量最终都来自 ,当某种难分解的有毒物质进入此生态系统后...
【单选题】A 25-year-old male racing car driver is admitted to the emergency department after a severe car crash. Radiologic studies reveal damage to the tip of the transverse process of the third cervical verte...
A.
Anterior spinal artery
B.
Vertebral artery
C.
Ascending cervical artery
D.
Deep cervical artery
E.
Posterior spinal arteries
【单选题】The driver admitted that the accident was partly his own __________.
A.
cause
B.
mistake
C.
fault
D.
blame
【简答题】右下图表示温带草原生态系统中部分生物构成的食物网,据图回答问题。 ( 1 )该食物网由 条食物链组成。构成生态系统成分中,图中没有画出的生物成分 是 。写出其中一条食物链 。 ( 2 )蛇和鹰之间存在两种关系,一种是竞争关系,另一种是 关系。 ( 3 )图中每条食物链的起点都是 ,正常情况下,该食物网中个体数量最多的生物是 ,食物网中所有生物进行生命活动的能量最终都来自 ,当某种难分解的有毒物质进...
【简答题】The driver admitted that not only ___, but he didn’t have a driving license either. A) he was not insured B) he was insured not C) was he not insured D) was not he insured
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