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答案:C 2.《中华人民共和国禁毒法》第四条规定:禁毒工作实行( )为主,综合治理,禁种、禁制、禁贩、禁吸并举的方针。 A.预防 B.打击 C.救治 D.惩罚 答案:A 3.《中华人民共和国禁毒法》规定,教育行政部门、( )应当将禁毒知识纳入教育、...
By employing Pd(OAc)2, Cs2CO3, or NaOH, and the new ligand (t-Bu)2PNP(i-BuNCH2CH2)3N (3a), an electronically diverse array of aryl bromides and chlorides possessing base-sensitive substituents (nitro, ester, and keto) provide coupling products with bulky aryl amines in good to excellent...
竞赛方法 进入答题系统后,点击“开始答题”按钮,系统将自动抽取2024年全国青少年禁毒知识竞赛题库题目生成10道题,每题10分、满分100分,限时3分钟答完。 答完后,系统即时报出答题对错情况、正确答案及最终得分。答题者在按动“开始答题”...
public Map additionalProperties() Get the additionalProperties property: oAuth2PermissionGrant. Overrides: MicrosoftGraphOAuth2PermissionGrant.additionalProperties() Returns: the additionalProperties value.clientId public String clientId() Get the clientId property: The id of the client se...
An experiment was conducted in order to compare the production of methane (CH4) and carbon dioxide (CO2) from anaerobic decomposition of Salvinia auriculata. The incubations were prepared and maintained (138 d) at 4 different temperatures (15.3, 20.8, 25.7 and 30.3 °C), and the daily rates...
There is no η2-olefin intermediate on the reaction path. DFT calculations seeking the energy and structure of the two carbenes Cp2ZrHCl[CF(CH3)] and Cp2ZrFCl[CH(CH3)] are also described. 展开 DOI: 10.1021/ja0024340 被引量: 1 年份: 2001 ...
Namespace: Android.Hardware.Camera2.Params Assembly: Mono.Android.dll Immutable class to store available mandatory stream information.C# Copier [Android.Runtime.Register("android/hardware/camera2/params/MandatoryStreamCombination$MandatoryStreamInformation", ApiSince=29, DoNotGenerate...
Other attributes place of origin Guangdong, China brand name DN model number LA3000 dimension 940x600x190mm power source built-in lithium battery snr >110dB output power 2x2500W connection type Other shell material metal the body material
class除了表示“班级”的意思,还会有“等级、阶级、阶层、类别、等级制度”等意思。 最开始的时候指的古罗马打仗期间召集起来的一群一群士兵,在军队里有各种各样的等级,它后来指古罗马社会里把人分成的6个等级,再后来就是现在的用法。 今天我们就用单词class来旧辅新知...