Why shiprepair is an inherently difficult business to manage in the conventional sense?（）

A . Bob has max_user_connections set to zero, which blocks all his connections B . Joe has exceeded the max_user_connections global limit C . All users are blocked because max_user_connections is accumulated over the host account information D . Kay is already connected elsewhere and attempting to log in again E . Connect_timeout is too small to allow a connection to occur

A . overstowage B . segregation C . spot loading D . cargo typing

A . the value of one field cannot be set from the value in another field  B . the text string in the formula is set to null. Thus notes cannot validate the formula  C . when setting the value of a field , the formula must be in the field‟s input validation event  D . the formula does not specify that title is an existing field. Thus it is interpreted as a temporary variable&e

A . specific gravity B . viscosity C . S E number D . hydrolytic stability

A . offers a rapid return on investment B . telecommuting C . multiple network connections D . legal mandate

A .  Because Banks are still connecting via dial-up. B .  Because Banks need to save cost. C .  Because Banks find themselves with an obsolete branch infrastructure. D .  Many banks need back-office process streamlining.

A . BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network.  B . BPDU guard can guarantee proper selection of the root bridge. C . BPDU guard can be utilized to prevent the switch from transmitteing BPDUs and incorrectly altering the root bridge election. D . BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the port. E . None of the other alternatives apply

A . Wrought iron can resist liquids flow B . It is difficult to attain the wrought iron C . Wrought iron should be combined with cuprous alloys D . The cuprous alloys have mere disadvantages than wrought iro

A.Because he thinks it is comfortable to sleep in that way in space. B.Because he doesn’t want to touch any controls when he sleeps. C.Because the instruments of the spaceship are easily broken. D.Because he is afraid that the seat will move.

A．Because it is extremely dangerous to conduct such research on an airplane. B．Because it remains a mystery what wavelengths are liable to be interfered with. C．Because research scientists have not been to produce the same effects in labs. D．Because experts lack adequate equipment to do such research. 此题为多项选择题。

听力原文： The key question for any only child is this: Why were you an only child？ It's a key question for at least two reasons. If your parents had wanted several children, but could have you only, they are most likely to pour into you all the energy and attention that had been intended for several children. I call this the "Special Jewel" phenomenon. Only children, or special jewels often arrive when their parents are older-- usually in their thirties. These special jewels can become very spoiled and serf - centered. On the other hand, you may be an only child be cause your parents planned for only one and stuck to their plan. Your parents may give you a very strict and well-structured education to make you a little adult. Many only children grow up feeling unhappy because they always had to be such little adults. (33) A．Those who are themselves spoiled and self-centered. B．Those who expected to have several children but could only have one. C．Those who like to give expensive jewels to their children. D．Those who give birth to their only children when they are below 30.

A．unusual B．unavoidable C．annoying

A．Consumers buy more goods when prices are high B．Producers want to sell all of their goods C．Producers make more goods when prices are high D．Consumers will not buy all of the goods

A．because there are close substitutes for the firm’s product B．because the firm is protected by barriers to entry C．because the firm produces where MR = MC D．All of the above are reasons why a monopoly can earn an economic profit in the long run．

A．A.cat B．B.dog C．C.elephant D．D.bear

是 否

A. Because the progress is reported for each data file B. Because the progress is reported for each backup set C. Because other RMAN sessions have issued the same BACKUP command D. Because new data files have been added to the database while the RMAN backup is in progress