1.   Dust masks are graded according to the protection they offer.

2.   Also, consumers should wear dust masks, goggles and gloves when sawing the wood.

3.   Also normal precautions, such as wearing eye protection and a dust mask, should be taken when cutting treated lumber.

4.   A dust mask is not adequate to block vapors.

5.   A postal worker on Chambers Street made his rounds wearing a dust mask, Battery Park remained encircled by National Guardsmen in fatigues and out-of-towners flocked to ground zero.

6.   But Mattrick always wears hospital gloves inside elbow-length pesticide gloves, eye protection, and a dust mask when spraying.

7.   But the postal service officials said window clerks and carriers on their routes cannot wear dust masks or gloves.

8.   Consumers should wear dust masks, goggles and gloves when sawing the wood.

9.   Don safety goggles and a good quality dust mask when cutting or drilling plastic, and secure all work pieces in a vise or with clamps.

10.   Dust-caked hair and mud-battered shoes are the norm, as are dust masks when the wind kicks up billowing clouds of white sand.

n. + mask >>共 169
face 38.30%
dust 7.45%
paper 3.01%
rubber 3.01%
iron 2.48%
gauze 1.42%
hockey 1.24%
cloth 1.06%
filter 1.06%
goalie 1.06%
dust + n. >>共 119
mite 14.84%
cloud 14.02%
particle 11.99%
mask 8.54%
bunny 3.46%
collector 2.24%
level 2.03%
cloth 1.83%
ball 1.42%
pollution 1.42%
每页显示:    共 42