( )是指中央银行通过道义劝告、窗口指导等办法来间接影响商业银行等金融机构行为的做

对自然资源和文物等人文资源进行旅游利用应当注意哪些事项？

半固体培养基中琼脂浓度为

A．11%～20%
B．6%～10%
C．0.3%～0.5%
D．0.01%～0.1%
E．1%～5%

A vessel aground may have negative GM since the（）.

A.decrease in KM is equal to the loss of draft

B.virtual rise of G is directly proportional to the remaining draft

C.lost buoyancy method is used to calculate KM, and KB is reduced

D.displa ement lost acts at the point where the ship is aground

胆结石形成机制（）

A.胆固醇过多

B.胆盐过多

C.胆盐过少

D.胆色素过少

进水渠道转变时，轴线的转弯半径不宜（）。

A.小于3倍渠底宽度

B.大于3倍渠底宽度

C.小于4倍渠底宽度

D.大于4倍渠底宽度