下列命名中不正确的是（ ） A: Na+：sodium ion B: Ag+：silver ion C: Ca2+：calcium ion D: Al3+：argon ion

The formation of human body current is mainly due to ( ). A: Potassium ion B: Sodium ion C: Potassium and sodium ions D: Calcium ion

Add -ed or -ion to or remove them from the following words to form new words. -ed content ➝ 1)____________ compressed ➝ 2)____________ complicated ➝ 3)______________ -ion identify ➝ 4)_____________ justify ➝ 5)______________ qualify ➝ 6)______________ illustrate ➝ 7)______________ exhibition ➝ 8)______________ extend ➝ 9)______________ interpret ➝ 10)______________ plant ➝ 11)______________ perceive ➝ 12)______________

Add -ion, -er, or -ist to or remove them from the following words to form new words. -ion dominate ➝ 1) orient ➝ 2) confront ➝ 3) -er compose ➝ 4) bind ➝ 5) scan ➝ 6) manufacture ➝ 7) eraser ➝ 8) -ist imperial ➝ 9) left ➝ 10) terror ➝ 11) humane ➝ 12)

What is subject matter of Ion?

离子障（ion trapping）

中英文互译：selected ion monitoring

中英文互译：total ion current

连接SQL Server数据库服务器应该是用哪个类？ A: OracleConnect ion B: OLEDBConnection C: EntityConection D: SQL Connect ion

某种计算机的内存容量是640K容量是指（ ）个字节 A: 640 B: 640*1000 C: 640*1024 D: 640*1024*1024