（）交易可不经确认查询直接行使退单权利，（）交易必须经过确认查询交易。A.准贷记卡；

The probability of failure for a project element is often called exposure to risk，or risk exposure．This exposure may be mitigated by taking measure to avoid a particular approach or use of specific technologies．When the risk exposure cannot be reduced through selection of another alternative，the project manager should______．

A．conduct further studies and analysis until a more attractive alternative is found

B．disregard the exposure to risk because nothing can be done

C．not performs the activities with risk exposure and save the money which would have been spent on them

D．establish a contingency plan to overcome any adverse activitwhich may include a contingency allowance

脾主升清的内涵是

A．脾将水谷精微上输心肺头目

B．防止水液在体内停聚

C．维持内脏位置恒定

D．防止血逸出脉外

E．为胃行其津液

______ I fully understand your point of view, I do also express some on Michael's.

A．While

B．When

C．Because

D．Once

中年妆是指（）年龄段。

A、30-40

B、40-60

C、30-60

D、40-50

预缩砂浆修补在铺填完成后的（）内应有人专门养护。

A、2～4d

B、4～8d

C、4～8h

D、2～4h