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People on Hainan Island like scuba diving. But do you know what makes it possible for people 1 under water for a long time? It’s the scuba machine. Then do you know 2 invented the machine? It was Jacques Cousteau and 3 friend. Cousteau was a man 4 of new ideas. Ever 5 he was a child, he had dreamed of diving deep to explore ( 探索 ) the wonderful world 6 the sea. Later with the scuba machine he invented, his 7 came true. He took a lot of pictures and videos of many things 8 people had never seen before. It 9 him eight years to make a TV show which he named “ The Undersea World of Jacques Cousteau”. People were 10 when they saw many beautiful things under water. Cousteau loved the coral reels and all the beautiful fish. However, when he returned some years later, he was 11 to see that the colourful coral reels were 12 and grey. He tried everything possible to help people know the 13 of saving the environment and 14 them to take part in keeping our lakes, rivers, seas and oceans 15 .
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【多选题】资本帝国主义列强对中国进行经济侵略的方式主要是( )。
A.
控制中国的通商口岸
B.
剥夺中国的关税自主权
C.
实行商品倾销和资本输出
D.
操纵中国的经济命脉
【单选题】资本—帝国主义列强对中国进行经济侵略的方式,主要是
A.
军事侵略与资本输出
B.
商品倾销与资本输出
C.
政治控制与资本输出
D.
商品倾销与政治控制
【多选题】机械图样中,可见轮廓线采用( )线型,不可见轮廓线采用( )线型。
A.
粗实线
B.
细实线
C.
细虚线
D.
粗虚线
【多选题】下列操作中错误的是( )
A.
用间接法配制HCl标准溶液时,用量筒取水稀释
B.
用右手拿移液管,左手拿洗耳球
C.
用右手食指控制移液管的液流
D.
移液管尖部最后留有少量溶液及时吹入接受容器中
E.
用烧杯滴定时,边滴边摇。
【单选题】机械图样中可见轮廓线采用( )线型。
A.
细实线
B.
粗实线
C.
细虚线
D.
波浪线
【多选题】对人体作用电流的划分()
A.
感知电流
B.
摆脱电流
C.
室颤电流
【单选题】机械图样中,可见轮廓线采用( )线型。
A.
点划线
B.
细实线
C.
粗实线
D.
虚线
E.
波浪线
【简答题】将下列十进制数分别转换为二、八、十六进制数。 (1) 129.25 (2) 86.75
【单选题】两光强均为I的相干光干涉的结果,其最小光强为( )
A.
I
B.
2I
C.
0
D.
4 I
【简答题】在滴定分析中,借助指示剂颜色突变即停止滴定,称之为 点。
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