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【单选题】
寄生性膜翅目通称寄生蜂,绝大多数为食虫昆虫,是一类十分重要的天敌昆虫。如( )。A.
黑尾叶蝉头蝇；
B.
蝗麻蝇；
C.
松毛虫狭颊寄蝇；
D.
松毛虫黑卵蜂
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皮皮学刷刷变学霸
举一反三
【简答题】简述输血的基本原则。
【简答题】In an ecosystem environment what is the role of the ecossytem orchestrator?
【简答题】明明在幼儿园的活动中发现白纸被水打湿后很容易撕开,明明的这一发现属于:
【单选题】What is the role of the SRY gene in humans?
A.
It initiates the X inactivation process in females.
B.
It is located on the X chromosome and causes the X to pair with the Y chromosome during male meiosis.
C.
It is located on the Y chromosome and initiates the developmental pathway toward the male phenotype.
D.
It is located on an autosomal chromosome and represses expression of autosomal genes in order to balance their expression level with genes on the X chromosome.
【单选题】已知变量 x 的值为 3 ,选项中( )不会打印4?
A.
Console.Write(x++);
B.
Console.Write(++x);
C.
x++; Console.Write(x);
D.
++x; Console.Write(x);
【单选题】“运河水,荡悠悠,隋炀皇帝下扬州。一心只把琼花看,万里江山一旦丢。”隋炀帝乘“龙舟”从洛阳巡游到扬州,要经过大运河的哪几段( ) 1通济渠 2永济渠 3邗沟 4江南河
A.
①③④
B.
②③④
C.
①③
D.
①④
【单选题】What is the role of an elevator pitch?
A.
A great way to promote your business.
B.
To increase your confidence.
C.
To make it easier for you to interact with other attendees.
D.
All of the above.
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