鉴别水杨酸及其盐类，最常用的试液是（）。A．碘化钾B．碘化汞钾C．三氯化铁D．硫酸亚铁E．亚铁氰化钾

What can we learn from the conversation？

A．Everything is possible.

B．The woman only uses her right hand.

C．The woman only uses her left hand.

The Juice-Juju uses only the inside of the orange.

A．Right

B．Wrong

C．Doesn't say

A.InnoDB uses row and table-level locks, but row locks are not escalates

B.InnoDB locks only those rows that are updated

C.InnoDB only uses row locks, not page or table-level locks

D.InnoDB row locks may be escalated to page or table-level locks

E.InnoDB uses row-level or table-level locks depending on the number of rows affected

A．The inner bark of a mulberry tree and wool.

B．Wool and bamboo.

C．Wood and bamboo.

D．Grass and wood.