简述学前儿童呼吸系统的卫生保健措施。
卫生行政机关经过对某药厂进行检查评估，赋予该药厂生产麻醉药品的资格，这属于（） ["卫生行政一般许可","卫生行政特殊许可","卫生行政申戒罚","义务性卫生行政决定","权利性卫生行政决定"]
Which two statements about the Wired Equivalent Privacy （WEP） encryption mechanism are true？ （） ["the two methods of authentication using the WEP encryption are open and shared key","the 802.11 standard defines WEP security using 128-bit keys","WEP can provide stronger authentication through the use of LEAP， PEAP， or EAP-FAST","WEP is a scalable encryption solution that uses static keys for authentication","WEP security provides only one-way authentication","WEPv2 offers improved encryption by replacing the RC4 encryption mechanism with the AES （symmetric block cipher） mechanism"]
我国的国际收支统计申报具有如下的特点：（）。 ["实行交易主体申报制","通过银行申报为主，单位和个人直接申报为辅","定期申报和逐年时报相结合","采用抽样调查方法","各部门数据超级汇总"]
以下是色彩在广告设计中，功能价值体现的是（） ["元素性","结构性","认知性","思想性"]
前练习说
