搜题请搜索小程序“爱下问搜题”
问题 单项选择题

有人根据某种沙门菌食物中毒患者164例的潜伏期资料，用百分位数法求得潜伏期的单侧95%上限为57.8小时，其含义是（）.

A.大约有95人的潜伏期小于57.8小时

B.大约有69人的潜伏期大于57.8小时

C.大约有5人的潜伏期小于57.8小时

D.大约有10人的潜伏期大于57.8小时

E.大约有8人的潜伏期大于57.8小时

答案

参考答案：E

解析：潜伏期的单侧95%上限为57.8小时，意味着100例患者会有5例的潜伏期大于57.8小时，164例患者约有8例的潜伏期大于57.8小时。

单项选择题

You are part of a team that is working to develop a medical implant that would accentuate the biceps of middle-aged men. Numerous articles in prestigious medical journals have discussed this controversial product. Your project manager, a medical doctor by training, is an expert in medical implantation devices and many journal articles have mentioned him by name. Although his knowledge of the subject is vast, he continually seeks opinions from the team about a wide variety of project and product issues. Team members often run project meetings while he sits silently at the head of the table. His most likely I response to a question is “What do you think we should do” Which one of the following best characterizes his leadership style

A．Laissez-fair

B．Team directe

C．Collaborativ

D．Shared leadershi
查看答案
单项选择题

在一个bashshell脚本的第一行上应加入下面所示中的哪一条语句。（）

A.#/bin/csh

B.#/bin/bash

C./bin/bash

D.#!/bin/bash
查看答案