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问题 单项选择题 A1/A2型题

多细胞真菌的菌落类型是（）.

A.丝状型

B.酵母型

C.类酵母型

D.混合型

E.类丝状型

答案

参考答案：A

解析：多细胞真菌有菌丝和孢子，菌丝伸长分支交织成团，称丝状菌。

选择题

某有机物A在酸性溶液中可发生如下反应生成B：

下列说法中正确的是（　　）

A．该反应属于消去反应

B．A与烧碱溶液反应最多可中和4 mol NaOH

C．R的结构简式为CH3CH2CH2OH

D．有机物A和B在镍的催化下，均最多只能与4 mol的H2发生加成反应
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单项选择题

In recent years, one of the more popular topics for panel discussions at computer conferences and trade (61) has been the "RISC versus CISC" debate.
RISC processors feature a small number of instructions that each executes in (62) machine cycle. CISC processors use complex instructions that can take several cycles to execute.
The RISC versus CISC debate won’t be decided by panel discussion; it will be won in the marketplace. And the deciding factor may have little to do with (63) of instructions and registers and more to do with parallelism.
Since their conception, RISC processors have been evolving toward micro parallelism, incorporating parallel-processing features (64) the processor, RISC processors feature pipelining, whereby many instructions can be decoded while one instruction executes. RISC processors, however, are moving toward pipelines for each unit of the processor.
CISC processors also employ pipelining. They have many integer instructions that execute in one cycle, but the varying execution times of CISC instructions (65) the effectiveness of parallelism.

A．union

B．two

C．numbers

D．between

E．limit

F．contents

G．shows

H．one

I．within

J．enhance
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