60.  A from time to time   B  in time    C  sooner or later   D on occasion

Which MySQL utility program should you to process and sort the slow Query log based on query time or average query time?（）

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

During loading or discharging, the tallymen must make contact with（）on duty so as to solve problems in time.

During loading or discharging，the tallymen must make contact with（）on duty so as to solve problems in time.

If the Shipowner relies on an excepted peril，he must（）that the loss or damage was caused thereby.

Camshafts are usually driven by timing gears or （）.

If necessary to avoid collision or allow more time to（）the situation，a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion．

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.