To prevent headaches, watering eyes and blindness caused by the glare from snow, dark glasses are__________ .

相似题目

• opes or wires attached to derricks to prevent them from swinging during cargo handling operations are（）.

  A . Preventers B . Side ropes C . Stays D . Guide line

  查看最佳答案

• What is used to prevent twisting of a towing bridle?（）

  A . A bitt B . A bulkhead C . A V-spring D . A fishplate

  查看最佳答案

• To prevent a wooden hull from leaking you caulk it（）.

  A . after drydocking，while the hull is moist B . after drydocking，and the hull has dried C . afloat，where it is leaking D . afloat，in all accessible area

  查看最佳答案

• To prevent the spread of fire by convection you should （）.

  A . remove combustibiles from direct exposure B . cool the bulkhead around the fire C . close all openings to the area D . shut off electrical power

  查看最佳答案

• （）is used to prevent the entry of sea water to the machinery space.

  A . A special sealing gland B . Propeller C . Tailshaft D . Sterntube bearing

  查看最佳答案

• To prevent damage by and to storage batteries aboardsmall passenger vessels they should be located（）.

  A . in trays constructed of material that is resistant to the electrolyte B . so as to prevent movement when the vessel pitches and rolls C . in a well ventilated area D . All of the above

  查看最佳答案

• The safest procedure used to rig a guy and preventer is to have the guy（）.

  A . and preventer have equal stress B . stronger than the preventer to minimize the danger of separation C . take a lighter load than the preventer as a safety factor D . take the stress in case the preventer part

  查看最佳答案

• Please choke up the drums to prevent（）.

  A . moving B . movement C . from the movement D . them from moving

  查看最佳答案

• What must an administrator do to prevent new telnet users from connecting to the system?（）

  A . rmdev -l /dev/pts B . touch /etc/nologin C . chdev -l sys0 -a nologin D . chuser -a login=false ALL

  查看最佳答案

• To prevent the spread of fire by conduction, you should （）.

  A . cool the bulkheads around the fire B . remove combustibles from direct exposure C . close all openings to the area D . shut off all electric power

  查看最佳答案

• Winch gears must be maintained in proper alignment to prevent （）.

  A . overheating of the lube oil B . over-speeding of the motor C . wear on the braking system D . damage to the teeth

  查看最佳答案

• Which of the following must be eliminated to prevent accidents?（）

  A . Unsafe actions B . Orderliness C . Frequent inspections D . Good work habit

  查看最佳答案

• What must an administrator do to prevent new telnet users from connecting to the system？（）  

  A . rmdev -l /dev/pts B . touch /etc/nologin C . chdev -l sys0 -a nologin D . chuser -a login=false ALL

  查看最佳答案

• You want to enhance the security within the LAN and prevent VLAN hopping.  What two steps can be taken to help prevent this？（）

  A . Enable BPD guard B . Disable CDP on ports where it is not necessary C . Place unused ports in a common unrouted VLAN D . Prevent automatic trunk configuration E . Implement port security

  查看最佳答案

• You want to enhance the security within the LAN and prevent VLAN hopping. What two steps canbe taken to help prevent this？（）

  A . Enable BPD guard B . Disable CDP on ports where it is not necessary C . Place unused ports in a common unrouted VLAN D . Prevent automatic trunk configuration E . Implement port security

  查看最佳答案

• To prevent modification of array values in a function

  查看最佳答案

• Have a good from time to time to prevent yourself from getting stiff.

  查看最佳答案

• If only I_______ some medicine, I should be able to get rid of this awful headache.

  查看最佳答案

• （）needs to be given at birth to prevent hemorrhagic disease（出血性疾病） of some newborns.

  查看最佳答案

• According to this passage, in order to prevent forest fire, _______.

  查看最佳答案

• Which procedure is recommended to prevent or overcome spatial disorientation?

  查看最佳答案

• We must do something to prevent this（)happening.

  A、at B、for C、by D、from

  查看最佳答案

• To prevent viruses from spreading, we should______.

  A．shake hands with our friends instead of kissing them B．never touch the telephones, towels or plates C．often wash our hands D．often rub our noses and eyes

  查看最佳答案

• Noises may be contributing to the ___number of people,who turn up worried about their headaches.

  A.fluctuating B.growing C.steady D.falling

  查看最佳答案