A. 2:3:1液 B. 4:3:2液 C. 2:1等张含钠液 D. 1:2含钠液 E. 1:4含钠液
A. 耐高温而不凝固 B. 耐高温而不汽化 C. 耐低温而不凝固 D. 耐低温而不
A. sbo-with-enhanced-security B. direct-with-enhanced-seurity C. sbo-with-normal-seurity D. direct-with-normal-seurity