99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<strong id="ryhbe"><address id="ryhbe"></address></strong>

<del id="ryhbe"><table id="ryhbe"><nobr id="ryhbe"></nobr></table></del>

<i id="ryhbe"><button id="ryhbe"></button></i>

<strong id="ryhbe"><strong id="ryhbe"></strong></strong>

<i id="ryhbe"></i>

<track id="ryhbe"><dd id="ryhbe"><code id="ryhbe"></code></dd></track>

單項(xiàng)選擇題

Emulsion oils and sodium nitrite are both approved additives, but （） cannot be used if any pipes are galvanized or if soldered joints exist.

A.the latter
B.latter
C.former
D.the former

你可能感興趣的試題

單項(xiàng)選擇題

Emulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are （） or if any soldered joints exit.

A.chromed
B.welded
C.galvanized
D.bolted

單項(xiàng)選擇題

Either a low injection pressure or a leakage of piston rings is able to lead （）.

A.a high exhaust temperature
B.a high smoky exhaust
C.a high output
D.a high compression

<ins id="xeojw"><output id="xeojw"></output></ins>

<tbody id="xeojw"></tbody>

<blockquote id="xeojw"></blockquote>