121. ____is known as a long hatch during loading operation.
举一反三
- Which statements are true regarding table compression？（） A: It saves disk space and reduces memory usage. B: It saves disk space but has no effect on memory usage. C: It incurs extra CPU overhead during DML as well as direct loading operations. D: It incurs extra CPU overhead during DML but not direct loading operations. E: It requires uncompress operation during I/ F:
- According to the relative position of the transportation equipment, the excavator operation mode can be divided into flat loading vehicle, loading vehicle and joint loading four kinds.
- Which statements are true regarding table compression？（） A: A It saves disk space and reduces memory usage. B: B It saves disk space but has no effect on memory usage. C: C It incurs extra CPU overhead during DML as well as direct loading operations. D: D It incurs extra CPU overhead during DML but not direct loading operations. E: E It requires uncompress operation during I/O.
- 词汇与结构 Control functions are also translated into flight director commands for display on the pilots’ attitude director indicators, thereby providing the pilots’ flight attitude commands during manual operation or allowing the pilots to ________ autopilot operation.
- An example of a “back room” operation for an airline company is loading luggage onto the airplane.（ ）