<li id="mfmsi"><dl id="mfmsi"></dl></li>

<span id="mfmsi"><noframes id="mfmsi">

單項(xiàng)選擇題

The sealing rings are in four parts and pressed together around the piston rods by means of （）.

A.nuts
B.bolts
C.coil springs
D.stuffing boxes

你可能感興趣的試題

單項(xiàng)選擇題

The scavenging box is built of a number of sections provided with vertical flanges enabling them （） together to form two blocks.

A.being bolted
B.bolted
C.bolting
D.to be bolted

單項(xiàng)選擇題

The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.

A.so a height
B.such a height
C.so high
D.such high

感谢您访问我们的网站，您可能还对以下资源感兴趣：

中文字幕网国产

国产一级特黄a大片亚洲浮力影院久久久久久亚洲第一二三区日韩国产国产精品第不卡国产视频第一页

<li id="6ystj"></li>