题目内容

酚妥拉明、氯丙嗪过量引起的低血压，升压不能用

A.去甲肾上腺素
B.间羟胺
C.肾上腺素
D.去氧肾上腺素

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普萘洛尔没有以下哪一作用

A.抑制心脏
B.降低心肌耗氧量
C.减慢心率
D.直接扩张血管产生降压作用

下列哪项不是普萘洛尔的适应证

A.高血压
B.窦性心动过速
C.心绞痛
D.窦性心动过缓

阿托品与M受体结合，可使唾液分泌减少，所以是受体激动药

A. 对
B. 错

For a direct-mapped cache design with a 32-bit address, the following bits of theaddress are used to access the cache.Tag Index Offset31–10 9–5 4–01 What is the cache block size (in words)2 How many entries does the cache have?3 What is the ratio between total bits required for such a cache