测定含Cr和Mn的钢样中的Cr和Mn含量时,钢样溶解后Cr和Mn以()和()形式存在。
A.
B.
C.
D.
参考答案:C
选出与划线部分意思相同或相近的选项
1. How did they come here? By air.[ ]
A. By sea
B. By car
C. By plane
D. On foot.
2. Everyone is here except Danny.[ ]
A. beside
B. by
C. but
D. Only
3. The radio says the weather will be fine tomorrow. [ ]
A. that
B. it
C. the sky
D. the day
4. There is a lot of rain in summer. [ ]
A. many
B. much
C. few
D. a few
5. —I'm sorry. I'm late.
—It doesn't matter. But come to school earlier.[ ]
A. That's all right.
B. You are welcome.
C. You are wrong.
D. That's right.
下列有关公海上的管辖权,哪个选项正确
A.船旗国对其在公海上航行的船舶具有专属管辖权
B.普遍性管辖的对象主要是从事海盗、贩毒、贩奴、侵害沿岸国等行为
C.登临权由各国军舰、军用飞机行使
D.行使紧迫权是普遍性管辖的一种方式