【判断题】手工钨极氩弧焊时,焊枪的直线往复移动主要用于铝及铝合金薄板材料的大电流焊接。
【单选题】Which of the following is NOT mentioned in this passage?
A.
The stereotype of Germans is changed slightly.
B.
The British is disliked for their arrogant behavior.
C.
Germans fail to improve their standing.
D.
Germans are more popular than the British.
【单选题】下列有关“土的工程分类”的叙述中,错误的有()。
A.
土的工程分类适用于公路工程用土的鉴别、定名和描述,以便对土的性状作定量评价
B.
分类依据是土颗粒的组成特征、土的塑性指标及土中有机质的存在情况
C.
本分类应按筛分法确定各粒组的含量;按液限塑限联合测定法确定液限和塑限
D.
本分类将土分为巨粒土、粗粒土、细粒土和特殊土
【单选题】病人,男性,56岁。患胃癌入院,术前遵医嘱行清洁灌肠时,病人应采取的体位是
【简答题】完形填空。 Guangdong people are famous for their passion for Yum Cha(饮茶), a Cantonese term which literally means 'drinking tea'. And the tradition of drinking morning tea is the most special 1 of Guangdong...
【简答题】已知无向图G的边数m=13,3个2度顶点,2个3度顶点,1个4度顶点,其余的顶点均为5度顶点.试求G中5度顶点的个数。
【简答题】无机框图下图为中学化学中几种常见物质的转化关系(部分产物已略去).已知:A、C、D是常见的气体单质,F气体极易溶于水,且液态常做致冷剂. (1)写出化学式F______,写出电子式G______; (2)鉴定G中阳离子的实验方法和现象______; (3)D单质和E溶液反应,生成一种常见的消毒剂和漂白剂的有效成分,写出D+E溶液反应的离子方程式和③的化学方程式______、______. (4)工...
【单选题】One function of the program is that it allows the owner to ______ at a distance.
A.
change some access details for switching on the laptop
B.
turn on the laptop by using the original password
C.
operate the laptop by means of an alternative password
D.
erase the information kept in the stolen laptop